Is b correct? Please help and explainnn

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this