It is very easy and harmless for a healthy person to donate blood. There is (471)______amount of five to eight litres of blood (472)______a healthy man. Giving (473)______a small quantity of this will not (474)______him any harm. The (475)______body is remarkable, whatever (476)______has been taken (477)______the body it is soon (478)______by new blood, (479)______the blood loss (480)______small.

Options

A. provide
B. provides
C. provided
D. provider

Answer

C

Explanation

(c) ‘Provided’ is sometimes used as a condition in the sentence. Here, new blood replaces the blood donated on a condition that the blood loss is small. Hence, ‘provided’ is the answer