Correct Answer: 4, 2, 1, 3

Solution : Given:
1. Follicle 2. Folk 3. Follow 4. Foliage

Step 1: Compare the first, second, and third letters of each word. Since all the words have the same letters F , o , and l , then move on to the next letter.
Step 2: The fourth letter of each word is i, k , or l . Based on the alphabetical order of these letters, we can arrange them – Fol i age, Fol k , Fol l ow, Fol l icle.
Step 3: Compare the fifth letter of (Foll o w, Foll i cle). Foll i cle will come before Foll o w in the sequence as i comes before o in the alphabetical system.

So, the sequence is Foliage, Folk, Follicle, Follow, or 4, 2, 1, 3. Hence, the first option is correct.