It is impossible for any critic to not be somewhat influenced by his own beliefs, values, and prejudice.
a. true
b. false

TRUE

The critic is usually an expert on a certain subject, so that his opinion is important to the evolution and better understanding of it. There are critics for the arts in general, for science and other areas.

Criticism can be positive, through constructive or negative praise and suggestion, when criticism is used in the literal sense of the word to criticize something.

 Usually, the critic must have a neutral position on a certain aspect to make the criticism without contamination. However, every human being has values and beliefs that determine his formation as a person. In this way, even if the critic tries to be as neutral as possible, his/her values, beliefs and prejudices will somehow influence the outcome in criticism, even if unconsciously.

what is the tax base for the sales tax?

it should be (usually ) 6%