Select the most appropriate option to improve the bold part of the sentence.
I wish I am taller.

Correct option is A

The correct substitution of the highlighted words is (a) were taller.
Explanation: After wish (expressing an unreal/contrary-to-fact present situation), we use the past subjunctive: wish + subject + were for all persons. The speaker is not taller now, and is imagining a different present state; hence I wish I were taller.
Grammatical rule used:
· Wish + simple past → unreal present: I wish I were rich.
· Wish + past perfect → unreal past: I wish I had studied harder.
· Wish + would → annoyance/volition about someone/something else’s behavior: I wish he would listen.
· Example: I wish she were here. (not was)
Why other options are incorrect:
· (b) was taller: In formal/standard English, the subjunctive “were” is preferred with I/he/she/it after wish to indicate unreality.
· (c) would be taller: Wish + would is for someone else’s willingness/change, not one’s current state.
· (d) could be taller: Could suggests ability/possibility, not the standard unreal present form after wish.
Information booster (Subjunctive):
Common fixed uses: If I were you…, I wish it were possible.