Answer:
Silent mutation.
Explanation:
A silent mutation usually does not affect the protein produced by the translation of a given gene, it means, it will not affect the aminoacid sequence of the protein, since the genetic code is degenerated.
A Nonsense mutation will derive in the formation of an early STOP codon, so, the protein will be truncated (shorter than it should be).
It is important to notice that nucleotide insertion and deletion COULD derive also in the formation of a stop codon, but not necessarily, since it can just move the reading frame, and of course it will derive in a different protein.
Water is a Solute so your answer is C. have a nice day
D. all of the above
this sounds a lot more like geography than biology by the way