A person who insists on something

Disciplinarian
Stickler
Instantaneous
Boaster

The correct answer is: B. Stickler

A stickler is a person who insists on high standards or adherence to rules. They are often seen as being overly strict or demanding, but they can also be seen as being fair and just. Sticklers are often motivated by a desire for order and perfection, and they can be very helpful in ensuring that tasks are completed correctly and that people are held accountable for their actions.

The other options are incorrect for the following reasons:

  • A disciplinarian is a person who enforces rules and discipline. They are often seen as being strict or harsh, but they can also be seen as being fair and just. Disciplinarians are often motivated by a desire to keep people safe and to ensure that they behave appropriately.
  • Instantaneous means happening or done without delay. It is not a person who insists on something.
  • A boaster is a person who talks about their own achievements or possessions in a way that is intended to impress others. They are often seen as being arrogant or conceited, and they can be very annoying to others. Boasters are often motivated by a desire for attention or admiration.