Select the option that can be used as a one-word substitute for the given group of words/phrase.
Rarely; not often

Correct option is B

The correct one-word for the given group of words is (b) seldom.
Seldom means not often; occurring infrequently. (Hindi: कभी-कभी, शायद ही कभी)
Example: He seldom visits his hometown these days.
Meanings of the given other options:
· (a) Habitually: Doing something as a habit or custom. (आदतन)
· (c) Frequently: Occurring often or regularly. (अक्सर)
· (d) Routinely: Done as a regular procedure. (नियमित रूप से)
All other options indicate regular or frequent actions, which is opposite to “rarely”.