The question is all in the photo

Which of the following of the following sets of side lengths could not form a triangle?

The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980

Find the quotient with the restriction.