Astatement of a viewpoint supporting one side of an argument is called a

The correct answer is claim.

A claim is any statement or point of view a person might take on a particular argument. If you agree with one side of an argument, it means that you have a claim when it comes to that side. For example, if you are pro abortion, your claim is that abortion should be legal.

A statement of a viewpoint supporting one side of an argument is called a  claim.

A claim is the main argument of an essay. It is probably the single most important part of an academic paper.

A claim is an argument that may be debatable and that states a fact which is more than just a personal opinion. It is particularly focused on an argument which defines your goal. The claim is intended to prove and support the argument.

the answer is definitely d. sorry for a late response.