Best Online CAT Coaching

Sentence 4 introduces the idea that being in space makes your spine stretch out a bit, making you taller. Sentence 1 adds to that by explaining that in space, your blood moves towards your upper body, like your heart and head, because of the lack of gravity pulling it down. Sentence 3 is connected to sentence 1 as it talks about how your heart reacts to all that blood moving towards your upper body; it thinks there's too much blood so it shrinks. Sentence 2 wraps up the discussion by saying that these effects aren't permanent, once you come back to Earth, your heart and spine go back to normal. By pairing these sentences, we can understand how being in space affects the body's physiology and how it adapts to the environment, with the effects being temporary and reversible once back on Earth. Hence, the correct order is 4132.