Final answer:
b) MSH2, mismatched base. Eukaryotic mismatch repair contains MSH2, which interacts with the mismatched base.
Step-by-step explanation:
The correct answer is b) MSH2, mismatched base. Eukaryotic mismatch repair does not contain prokaryotic MutS. Instead, it contains MSH2, which interacts with the mismatched base. Mismatch repair is a mechanism employed by cells to correct errors introduced during DNA replication. MSH2 is one of the key proteins involved in eukaryotic mismatch repair, responsible for recognizing the mismatched base and initiating the repair process.