Answer:
A. Exons
Step-by-step explanation:
Exons
It is the coding region of the gene , which have the information to encode the protein .
Exons are composed of DNA which get translated to proteins and amino acids .
In eukaryotes , the arrangement of exons is in a continuous fashion or are separated by introns .
hence ,
the part of gene that codes for protein are A. Exons .