I'd get jq to output the results line-wise. Then use the bash mapfile command to read the lines into an array

mapfile -t correct < <(jq -r '.results[] | .correct_answer' <<<"$quiz")
declare -p correct

declare -a correct=([0]="Amazon" [1]="60 lbs" [2]="True")

For the incorrect answers, since bash does not have multi-dimensional arrays, I'd get jq to output the array of incorrect answers as CSV:

mapfile -t incorrect < <(jq -r '.results[] | .incorrect_answers | @csv' <<<"$quiz")
declare -p incorrect

declare -a incorrect=([0]="\"Netflix\",\"BBC\",\"CCTV\"" [1]="\"30 lbs\",\"50 lbs\",\"70 lbs\"" [2]="\"False\"")

Then:

$ echo "q $i: ans=${correct[i]}; wrong=${incorrect[i]}"
q 1: ans=60 lbs; wrong="30 lbs","50 lbs","70 lbs"

Documentation:

• Process Substitution
• Here Strings

I'd get jq to output the results line-wise. Then use the bash mapfile command to read the lines into an array

mapfile -t correct < <(jq -r '.results[] | .correct_answer' <<<"$quiz")
declare -p correct

declare -a correct=([0]="Amazon" [1]="60 lbs" [2]="True")

For the incorrect answers, since bash does not have multi-dimensional arrays, I'd get jq to output the array of incorrect answers as CSV:

mapfile -t incorrect < <(jq -r '.results[] | .incorrect_answers | @csv' <<<"$quiz")
declare -p incorrect

declare -a incorrect=([0]="\"Netflix\",\"BBC\",\"CCTV\"" [1]="\"30 lbs\",\"50 lbs\",\"70 lbs\"" [2]="\"False\"")

Then:

$ echo "q $i: ans=${correct[i]}; wrong=${incorrect[i]}"
q 1: ans=60 lbs; wrong="30 lbs","50 lbs","70 lbs"

Documentation:

• Process Substitution
• Here Strings

Assuming you're interacting with the user:

i=0
read -p "Answer to question $i: " answer

if [[ $answer == "${correct[i]}" ]]; then
    echo Correct
elif [[ ${incorrect[i]} == *"\"$answer\""* ]]; then
    echo Incorrect
else
    echo Invalid answer
fi

Keep in mind that within [[...]] the == operator is not a string equality operator, it is a pattern matching operator.

• the first test is a straightforward string comparison
• the second test sees if the CVS string holding the incorrect answers contains the answer in double quotes

I'd get jq to output the results line-wise. Then use the bash mapfile command to read the lines into an array

mapfile -t correct < <(jq -r '.results[] | .correct_answer' <<<"$quiz")
declare -p correct

declare -a correct=([0]="Amazon" [1]="60 lbs" [2]="True")

For the incorrect answers, since bash does not have multi-dimensional arrays, I'd get jq to output the array of incorrect answers as CSV:

mapfile -t incorrect < <(jq -r '.results[] | .incorrect_answers | @csv' <<<"$quiz")
declare -p incorrect

declare -a incorrect=([0]="\"Netflix\",\"BBC\",\"CCTV\"" [1]="\"30 lbs\",\"50 lbs\",\"70 lbs\"" [2]="\"False\"")

Then:

$ echo "q $i: ans=${correct[i]}; wrong=${incorrect[i]}"
q 1: ans=60 lbs; wrong="30 lbs","50 lbs","70 lbs"

I'd get jq to output the results line-wise. Then use the bash mapfile command to read the lines into an array

mapfile -t correct < <(jq -r '.results[] | .correct_answer' <<<"$quiz")
declare -p correct

declare -a correct=([0]="Amazon" [1]="60 lbs" [2]="True")

For the incorrect answers, since bash does not have multi-dimensional arrays, I'd get jq to output the array of incorrect answers as CSV:

mapfile -t incorrect < <(jq -r '.results[] | .incorrect_answers | @csv' <<<"$quiz")
declare -p incorrect

declare -a incorrect=([0]="\"Netflix\",\"BBC\",\"CCTV\"" [1]="\"30 lbs\",\"50 lbs\",\"70 lbs\"" [2]="\"False\"")

Then:

$ echo "q $i: ans=${correct[i]}; wrong=${incorrect[i]}"
q 1: ans=60 lbs; wrong="30 lbs","50 lbs","70 lbs"

Documentation:

• Process Substitution
• Here Strings