Question

Fill in the blank with a suitable option:
_______ we discover life on another planet, will it be beneficial to us?

• A. As soon as
• B. While
• C. Until
• D. If

Answer 1

The correct option is D If

Answer : D

Subordinating Conjugation : It is a word or phrase used to link a dependent clause to an independent clause.

It is used to:

• show a cause-and-effect relationship between the dependent & subordinate (independent clause)
• to show a relationship involving a transition of time or place between two clause

Let's take a look at the usage of the subordinating conjugations in the options:

• as soon as : It is used to express that one event happens first and another happens immediately after
• while : It is used to express an action in progress; sometimes this action is interrupted
• until : It is used to express the time when an event or action comes to an end
• If : It is used to express a condition that is necessary for something to happen

Here in the question, we understand that the speaker is questioning beneficialness of alien life in case it is discovered. Therefore from among the options, 'If' is the most suitable subordinating conjugation to complete the sentence.

Thus, the correct complete sentence is:

IF we discover life on other plane, will it be beneficial to us ?