Answer :
Whenever Amir bites his fingernails without any intention is an example of a habit Option(a) is correct.
What is Habit?
Habit is known to be as the tendency or a certain manner of the behavior of a person which he follows in his day to day activity.
As a person or Amir when he bites his finger whenever he is anxious or basically nervous is usually is his habit of doing it.
Therefor Option(a) is correct.
The complete question is given in the image attached below.
Learn more about Habit here:
brainly.com/question/5857190
#SPJ2
