Select the option that can be used as a one-word substitute for the given group of words.
A person who presents a radio/television programme

Correct option is B

The correct one-word for the given group of words is (b) Anchor.
" Anchor" refers to someone who presents and coordinates a TV or radio show. (समाचार प्रस्तुतकर्ता)
Example: The anchor kept the debate lively with his sharp questions.
Meanings of the other options:
· (a) Idol: someone admired or worshipped (आदर्श)
· (c) Speaker: someone who speaks (वक्ता)
· (d) Star: a famous or celebrated performer (सितारा)