Question

modifications of blood stem cells are:
○ somatic changes, so they will not be passed on to offspring.
○ germ-line changes, so they will not be passed on to offspring.
○ somatic changes, so they can be passed on to offspring.
○ germ-line changes, so they can be passed on to offspring.

Explanation:

Blood stem cells are somatic cells. Somatic changes occur in non - reproductive cells and are not passed to offspring. Germ - line changes occur in reproductive cells (like sperm and egg) and can be passed. Since blood stem cells are not germ - line cells, their modifications (somatic changes) won't be passed to offspring.

Answer:

A. somatic changes, so they will not be passed on to offspring.