Closet Test Closet Test - Section 1

They are comparing manned and unmanned missions. Manned missions are expensive as told above. Thus unmanned mission in the first blank.

For unmanned mission and employing machine intelligence we used preferred because it is has high preference than other.

Cause and Reason are two words that are often used as synonyms. Strictly speaking they are not synonyms. They have to be used with difference. Hence they are not interchangeable.

A cause is the one that produces the effect. For example you can say that a typical virus is the cause of the disease of chickenpox. It is understood that the particular virus produces the effect called chickenpox. Hence anything that produces an effect is called a cause.

On the other hand reason refers to a thought or a consideration in support of an opinion. Observe the usage of the word \'reason\' in the sentences given below:

1. What is the reason for your decision?

2. You may give me the reason behind your suggestion.

In both sentences given above the word \'reason\' is used in the sense of \'a thought\' in support of an opinion or a decision.

Because moon, sun and mission is finite.

Whereas space is infinite, which can be explored.

Because cultural and historical are similar ending word and are connected with or.