Most multicellular organisms are composed of cells with different shapes and sizes, and those cells perform different functions. What is the best explanation for this?
A.
Mutations accumulate in an organism's cells, causing them to become different from the other cells.
B.
Environmental conditions influence gene expression, which determines how a cell develops.
C.
As cells divide, they only pass on the genetic material that will be used in the daughter cells.
D.
The structure and function of an organism's cells is determined by the genetic material it receives during fertilization.

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.