What best describes how mutations are related to evolution?
a) there is not a strong relationship between mutations and evolution
b) natural selection causes evolution, which causes more mutations to appear in the dna of the species
c) mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve
d) mutations are changes in dna that produce weaker organisms that die, so these are eliminated by evolution.

Option(C)

Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve best describes how mutations are related to evolution.

Explanation:

Mutation is any change in DNA of an individual which causes considerable change in the individual. Mutation happens either when the DNA does not copy properly or when there is some influence by any external factor. it consists of four different types of Mutation namely, Substitution, insertion, deletion and Frameshift.  

Evolution refer to a gradual changes in the characteristics (mainly hereditary) over following generations. The three main types of evolution are divergent evolution, convergent evolution and parallel evolution.

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hope this you! : )

(i popped my answer into google translate so it may be a bit wonky)