This question is based on the following three-letter words:
(Left) CAR HAT FED EYE (Right)
How many letters are there between the second letter of the first word from the left and the first letter of the first word from the right?

Three-letter words:
(Left) CAR HAT FED EYE (Right)

Counting words between the second letter of the first word from the left and the first letter of the first word from the right

Second letter of "CAR" (which is "A") and the first letter of "EYE" (which is "E").

Counting the letters between "A" and "E", we get

R, H, A, T, F, E, D, 

There are 7 letters between the two specified letters

Thus, correct option is (a)