Which step of the scientific method involves making an inference?
a) retest by other scientists
b) do background research
c) test with an experiment
d) draw a conclusion

The only logical answer would be to D) draw a conclusion, given that an inference is another word for conclude. Helpful tip, if you are dealing with the scientific method just google the method and boom! there is your answer.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

elements make up everything, and they combine to make compounds.

the answer is c