According to dictionary, which of the following word will come at THIRD position?
1. Heritage
2. Helpful
3. Hectic
4. Heroic
5. Heroism

First two letters of all the words are same so verifying the third letter.

The alphabetical order of third letters of the words is c, l, r. Arranging the respective words in the same order, Hectic is placed first, Helpful is placed second.

The alphabetical order of fourth letters of the remaining words is i, o. Arranging the respective words in the same order, Heritage is placed third and the remaining two words are placed fourth and fifth.

$$\therefore\ $$Heritage will come at third position according to dictionary.

Hence, the correct answer is Option B