A sentence has been given with a blank to be filled with an appropriate word. Choose the correct alternative.
Every person should know their own _______, what their skill set is and how unique they are.

Correct option is B

The correct option to fill in the blank is (b) specialties.
Explanation: "Specialties" refers to particular areas in which a person excels, fitting the context of skill sets and uniqueness. (Hindi meaning: विशेषताएँ)
Example: His specialties include painting and sculpture.
Explain why other options are incorrect:
· (a) fecundities: Ability to produce abundantly. (Hindi meaning: उत्पादकता)
· (c) calamities: Disasters or misfortunes. (Hindi meaning: आपदाएँ)
· (d) punctualities: Quality of being on time. (Hindi meaning: समयनिष्ठता)