3. State four ways in which surface tension is useful to
man:

We can find numerous examples where surface tension plays a role. ... High surface tension of water is also the reason why rain comes down as a spherical drop. High surface energy drives the water drop to take a shape with as little surface area as possible, making a sphere shape most favorable.

i think the answer is a, hope this : )

i think the answer is a and b

i wish you luck