Select the most appropriate option to fill in the blank.
We have postponed this movie outing too many times, so we are going tomorrow, come _____ or shine.

Correct option is A

The correct option to fill in the blank is (a)  rain.
Explanation:
The phrase  "come rain or shine" is an idiom that means "no matter what happens," emphasizing commitment. It is used to convey determination to do something regardless of obstacles.
Example:  We will have the picnic, come rain or shine.
Meanings of other options:
· Mountain: Not used in this context. (Hindi: पर्वत)
· Hail: Refers to frozen raindrops, incorrect in this idiom. (Hindi: ओले)
· Thunder: Not suitable for the idiom. (Hindi: गरज)