Which of the following statements is true?
acquired mutations are passed down from parent to offspring.
mutations are the most fundamental way to add new genes to a gene pool.
hereditary mutations are caused by external factors, such as radiation.
only somatic mutations are important to evolution because they can be inherited.

Mutations are the most fundamental way to add new genes to a gene pool.

Explanation:

Mutation refers to the process through which the normal sequence of altered. It may be either acquired or hereditary. It leads to addition of new genes to a gene pool.

The reason for not considering other statements as true are:

1. It is the hereditary mutation that are passed form parent to offspring's and acquired mutation is caused by external factors.

2. Acquired mutation are caused by external factors such as radiation.

3. Germ line mutation are important to evolution because they can be inherited.

bc blah

explanation:

bc blah