If a mutation changes a complete piece of DNA so that its sequence reads CGACCTCAA instead of CGACCTGAA, which would occur?

Question

The genetic code & codon table (article) | Khan Academy

a
a base pair substitution resulting in the same protein
b
an amino acid deletion resulting in a shorter protein
c
a point mutation substitution resulting in a different protein
d
a frameshift mutation resulting in multiple amino acid changes within the protein

Answer 1

a base pair substitution resulting in the same protein