Possible answers: a). make blood b). clean blood c). split blood cells d). pump blood
Given those answer options, answer the question: Answer the following question given this paragraph: Tissues may be organized into organs. An organ is a structure composed of two or more types of tissue that work together to do a specific task. For example, the heart is an organ. It consists of muscle, nerve, and other types of tissues. Its task is to pump blood. Q: What is the heart's main task? A:
A:
d).