Which of the following sequences is correct for rainfall?

Rainfall formation requires the ascent of moist air, which cools adiabatically as pressure decreases with altitude [2]. Rapid ascent is a hallmark of convective precipitation, where intense updrafts lead to the formation of deep cumulonimbus clouds [3]. Within these clouds, rapid growth occurs through the collision-coalescence process in warm clouds or the Bergeron process in cold clouds [4]. In the collision-coalescence mechanism, larger 'collector' droplets fall faster, colliding and merging with smaller droplets to form large raindrops [5]. These raindrops must grow sufficiently large to overcome the upward thrust of the air currents [4]. Consequently, a rapid ascent of air provides the necessary vertical development and moisture supply for the formation of large raindrops, resulting in a heavy downpour [4]. Conversely, slow ascent or air descent (which causes warming) typically results in light drizzle or dry conditions [5].

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 24: Hydrological Cycle (Water Cycle) > Convectional Rainfall > p. 338
2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 22: Vertical Distribution of Temperature > A Parcel of Rising Air > p. 298
3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 25: Thunderstorm > Stage 2: Mature stage > p. 343
4. [4] https://ebooks.inflibnet.ac.in/geop14/chapter/atmospheric-moisture-iv-forms-and-types-of-precipitation/
5. [5] https://met.caa.gov.om/en/publication/rain/