Why will precipitation not occur if cloud droplets do not become sufficiently large?

Correct answer: They will not reach sufficient weight to fall

Correct answer: A. Cloud droplets are tiny liquid-water droplets suspended in the air. Air currents can keep such droplets floating because their small mass gives them a very low falling speed. For precipitation to reach the ground, droplets or ice particles must grow by condensation, collision and coalescence, or related processes. As they grow, their weight and falling speed increase. When the downward pull of gravity becomes strong enough to overcome the upward support of air, they fall as rain or another form of precipitation. Option A is correct because small droplets have insufficient weight to fall through the cloud and reach the ground. Option B is incorrect because cloud droplets do not turn into rock. Option C is incorrect because the issue is not loss of water vapour; the droplets remain water particles. Option D is incorrect because small droplets do not all become hail, which requires special growth conditions, usually in strong storm clouds. Memory cue: tiny cloud droplets float; large, heavy particles fall.