Each of the letters in the word CAREFUL are arranged in alphabetical order. How many letters are there in the English alphabetical series between the letter that is second from the left and the one that is fourth from the right in the new letter-cluster thus formed?

Correct option is D

First, arrange the letters in the word CAREFUL in alphabetical order:
- Original: C, A, R, E, F, U, L
- Alphabetical order: A, C, E, F, L, R, U
Number of letters between C and F are two i.e. D and E
Thus, there are two letters (D and E) between C and F in the English alphabetical series.