Answer:
The correct answer will be option-Monocytes
Step-by-step explanation:
Agranular leukocytes are the leukocytes which contain very few numbers of granules in their cytosol. Agranular leukocytes are marked by the simple nucleus.
The agranulocyte which shows its effect by the amoeboid movement and phagocytosis are called monocytes. Monocytes help the body to get rid of the pathogen by the phagocytosis action which engulfs the debris and the pathogen and moving in amoeboid movement.
Thus, monocytes are the correct answer.