The answer is Venous Return. The Blood pressure is directly proportional to the Viscosity of the blood. Other factors like The total length of the blood vessel and Elasticity of the arteries also affect Blood pressure to an extend there by ruling them out. The remaining is Venous Return and hence the option as answer.
Question : Directions: Among five pencils, A, B, C, D, and E, the length of D is 10 cm. A is half the length of D but double the length of C. E is 2 cm longer than C. The length of B is equal to the lengths of A and E taken together. Which is the longest pencil?
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