Clive finds that the water coming out of the faucet is a little muddy. he concludes that the color in the water is due to the mining activity in the nearby forest. clive shares his conclusion with his science class. his classmates question his conclusion, but clive has no data to back up his conclusion. which step in the scientific investigation did he miss?

a. observing
b. communicating results
c. testing the hypothesis
d. creating a hypothesis

a. observing

Explanation:

Observation in research can be define as the visual examination of the outcomes of the experimental procedures or examination of naturally occurring process. This is important for framing the results of the experiment. The observation is particularly recorded in written notes, and photographs.

According to the situation given, he missed the observation in the scientific investigation. He must posses the proof of his observation before proposing the conclusion to his classmates.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.