Correct Answer: Memory B cells yaad rakhte hain purani infections ko aur jab wahi pathogen dobara aata hai, to ye jaldi se antibodies produce karte hain.
Step 1: Understand that memory B cells are a type of white blood cell.
Step 2: Learn that these cells are created after the body fights off an infection.
Step 3: Know that memory B cells 'remember' the specific germs (pathogens) that caused the infection.
Step 4: When the same germ enters the body again, memory B cells recognize it.
Step 5: Memory B cells quickly produce antibodies, which are proteins that help fight off the infection.
