Select the option that can be used as a one-word substitute for the given group of words.
One who speaks less in a forum.

Correct option is D

The correct one-word substitute is reticent.
· Reticent: A person who is reserved and speaks little (Hindi: कम बोलने वाला).
Example: The reticent student seldom spoke in class discussions.
Meanings of the other options and why they are incorrect:
· Eccentric: Refers to someone with unconventional behavior (Hindi: सनकी). Not related to speaking less.
· Loquacious: Means very talkative (Hindi: बातूनी). Opposite of reticent.
· Gabby: Informal term for someone who talks excessively (Hindi: बकबक करने वाला).