It’s an imperative sentence so in indirect speech “requested” should be there.
In each of the following questions you are given a figure followed by four alternatives(1), (2), (3) and (4). Choose the alternatives which is closely ...
Question figure:
...
Choose the alternative which is closely resembles the water-image of the given combination.
Choose the alternative which is closely resembles the water-image of the given combination.
Choose the alternatives which is closely resembles the water image of the given combination.
Select the water image of the given figure.
Question figure:
...