C.Chen answered the questions most eagerly of all. The others are wrong because: 1) "most" is a superlative word and so is "slowest" so they shouldn't use them together. 3)"more" is a comparative word and so is "later" so they shouldn't be used together. 4) "more" and "bigger" are both comparative so they shouldn't be used together too. The point is: two comparative or superlative words shouldn't be used together.Eagerly is not a comparative or superlative word so it can be used with "most"