Resist
Refrain
Assist
Attain
Answer is Right!
Answer is Wrong!
The correct answer is B. Refrain.
To abstain is to hold back or refrain from doing something. It can also mean to decline to participate in something.
Resist means to try to stop something from happening or to continue to do something even though it is difficult or dangerous.
Assist means to help someone do something.
Attain means to achieve or reach a goal.
In this case, the best synonym for abstain is refrain. This is because refraining from doing something is the same as holding back or not doing it.