Select the most appropriate option to fill in the blank.
The teacher was angry _________ the students.

Correct option is A

The correct option to fill in the blank is (a) with.
Explanation: Standard preposition use: angry with + person; angry at/about + thing/situation (though angry at a person also occurs, exam norm favors with for persons). Here, “the students” are persons, so angry with fits. Angry = क्रोधित/नाराज़.
Example: The coach was angry with the players for arriving late.
Why other options are incorrect:
· (b) to: Not idiomatic after “angry” ( angry to ✗).
· (c) by: Suggests agency in passive constructions; not used with “angry” ( angry by ✗).
· (d) on: Nonstandard Indianism here; standard English uses with/at/about, not on.