a mutation that inserts or deletes one or two nucleotides is usually more harmful than a mutation that substitutes one base for another because —

vodka and hennesy

explanation:

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

c should be the answer