Question

in this histological micrograph of the spleen, this forms
red pulp, which forms splenic cords
large quantities of red blood cells
white pulp which forms lymphatic nodules
the capsule
i dont know yet

Explanation:

The white pulp of the spleen is lymphoid tissue that forms lymphatic nodules (similar to lymph nodes) and is involved in immune functions. The red pulp contains splenic cords and large amounts of red blood cells. The capsule is the outer covering. Based on the histological appearance (lymphoid - like structure indicated by the arrow), it is consistent with white pulp which forms lymphatic nodules.

Answer:

white pulp which forms lymphatic nodules