Explanation
Plasma is the fluid part of blood, making up approximately 55% of its total content. This answer is correct because plasma is the liquid portion that carries the cells, including red blood cells, white blood cells, and platelets, throughout the body, and it plays a crucial role in maintaining blood pressure, transporting nutrients and hormones, and regulating body temperature. Students often remember this concept by associating it with the idea that plasma is like the ocean, and the cells are like the ships sailing through it, a useful memory tip that the QuizMaster of AnsweringExams.Com likes to emphasize. The other options are incorrect because they refer to specific components of blood, rather than the fluid portion itself, which is a key distinction to make in this context. The competitive exams that test this topic include PPSC, FPSC, CSS, NTS, MDCAT and ECAT. Practice more at AnsweringExams.Com.
