Final answer:
A deficiency in C3 would most likely lead to immune hemolytic anemia.
Step-by-step explanation:
A deficiency in C3, a protein involved in the complement system of the immune response, would most likely lead to B. Immune hemolytic anemia. The complement system plays a key role in destroying foreign pathogens, and deficiencies in C3 can result in the ineffective clearance of pathogens, which can lead to this type of anemia. Other symptoms of C3 deficiency may include frequent infections and impaired immune response.