Question

____ rain, take an umbrella

Answer 1

Answer:

There's rain, take an umbrella.

Answer 2

Answer:

It'll rain , take an umbrella.

Explanation:

The correct answer is -"It will rain, take an umbrella."

As it is given "rain" , so it is about future. If in the place of "rain" , there was "raining" we could have used "It is" . But as it mentions "rain", we will use "It will". And as it states "take an umbrella", we can assume that someone recommends to take it. Hence, therefore is not considered as a question, but a future statement.