3.

How does the detail "The phenomenon has been replicated for choices in a variety of domains, including jam and tea preferences, moral judgments and political attitudes" from paragraph 7 contribute to the text?

A

It proves that this phenomenon occurs in a variety of other reasoning contexts.

B

It shows that this phenomenon only occurs in certain instances.

C

It proves that this phenomenon only occurs for people's most valued opinions.

D

It shows that a person considers all their opinions to be equally important.

A

It proves that this phenomenon occurs in a variety of other reasoning contexts.

Explanation:

The mentioned phenomenon is called "choice blindness" and it basically says that we are far more critical towards other people's arguments than to those provided by ourselves.

This phenomenon has been put to the test, by several scientists, and was successfully reproduced in a variety of aspects of human life.

The quoted detail from the text-only serves to emphasize the presence of this phenomenon in small decisions, such as preferred type of jam or smell of a tea, as well as in some important aspects of one's life, such as political and moral choices and attitudes.