In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement". Take out your binoculars and (will see) the Andromeda galaxy. 

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement". Take out your binoculars and (will see) the Andromeda galaxy.  Correct Answer <span style="font-family:helvetica,helvetica_msfontservice,sans-serif">see</span>

Here the correct answer is See.
Key Points:-

• The statement clearly is said in the present tense.
• Therefore, option 2 is already eliminated because it shows past tense.
• Since the statement is also not said in the present continuous tense, therefore, we cannot use the 3rd option too. 
• The statement is said in the present tense and hence, option 1 is correct.