Question

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Answer 1

d)none of these

the correct answer is gravity

Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass. The most extreme example of this curvature of spacetime is a black hole, from which nothing—not even light—can escape once past the black hole's event horizon

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Answer 2

Explanation:

1. static friction

because

Static friction is a kind of starting fiction because an object just tends to start moving, it does not actually move. A wooden block is kept on the horizontal surface of a table..