Answer:
The correct answer is A) Mutation in any consensus sequence is likely to alter how efficiently a protein binds to the promoter.
Explanation:
The consensus sequence is the order in which some nucleotides are repeatedly located in a specific location in a gene. Therefore, any change in these nucleotides could cause a mutation depending on how it's expressed, even if the mutation is not in an exon, introns can also cause noticeable alterations in the later phenotype.