Question

With the help of circulatory it produce blood cells.

A. Excretory
B. Muscular
C. Endocrine
D. Skeletal

Answer 1

D. Skeletal

Step-by-step explanation:

blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.

Answer 2

Skeletal

Step-by-step explanation:

Think about the bone marrow.