Final answer:
The myeloblast stage is characterized by a nucleus with fine chromatin, nucleoli, and agranular cytoplasm, indicating the early stage of neutrophil development. Neutrophils are granular leukocytes with light lilac staining granules and a multi-lobed nucleus, and they are phagocytic cells engaged in immune defense. Therefore correct option is B
Step-by-step explanation:
The stage of neutrophil development described by having a nucleus with fine chromatin, nucleoli, and agranular cytoplasm is the myeloblast stage. During this early stage of neutrophil development, the cells have large nuclei with open chromatin and one or more nucleoli, and their cytoplasm is agranular, differing from other stages where granules become more prevalent. As neutrophils progress in their maturation, they acquire granules in their cytoplasm, which are clearly visible in the mature cells as small granules staining light lilac and presenting a multi-lobed nucleus.
Regarding other related biology concepts, it's noteworthy that granular leukocytes like neutrophils, eosinophils, and basophils contain abundant cytoplasmic granules and are derived from myeloid stem cells. Additionally, in the context of cell biology, individual chromosomes become visible under a light microscope during the prophase of mitosis. In the immune system, neutrophils, along with monocytes, are phagocytic cells and are part of the body's first line of defense against infection.