Final answer:
The correct option is c. acanthocytes. The blood cells with a scalloped border and regular cytoplasmic projections are called echinocytes, which can be identified by their unique morphology.
Step-by-step explanation:
The question refers to the morphology of blood cells with specific characteristics, particularly those with projections around their periphery, resulting in a scalloped appearance. When we examine blood cells such as those in Figure 17.5.3, we can see there are different types of cells, including red blood cells, white blood cells, and platelets.
The cell type described with a scalloped border exhibiting regular cytoplasmic projections is known as echinocytes. Echinocytes are also described as burr cells and can be distinguished by their unique irregular projections, which can be compared to the uniform finger-like extensions of podocytes, as shown in Figure 25.11.