Final answer:
Neutrophils are a type of white blood cell that have a real nucleus.
Step-by-step explanation:
Neutrophils are a type of white blood cell that plays a crucial role in the immune system's response to infection. They are granulocytes characterized by a distinct lobed nucleus and granular inclusions in the cytoplasm. While segmented neutrophils have a multi-lobed nucleus, banded neutrophils have a single, band-like nucleus. Therefore, the correct answer is a. have a real nucleus.