Correct option is A
The correct antonym of the given word is (a) Forbid.
Given word — authorize: to give official permission or approval; to sanction or empower someone to act (Hindi: अधिकृत करना/अनुमति देना).
Example: The council authorized the construction of the new bridge.
Correct answer word — forbid: to prohibit; to order someone not to do something; to refuse to allow (Hindi: निषिद्ध करना/मनाही करना).
Example: The school forbids students from using phones during class.
Synonyms (authorize): permit, allow, sanction, empower.
Antonyms (authorize): forbid, prohibit, ban, disallow.
Meanings of all the other given options:
· (b) Allow: to let someone do something; to permit (Hindi: अनुमति देना).
· (c) Empower: to give power/authority to; enable (Hindi: सशक्त/अधिकृत करना).
· (d) Permit: to allow; to grant authorization (Hindi: अनुमति देना/परमिट देना).