What delivery scenario is considered more conducive to the gradual development of life on early Earth?

Answer

A constant, slow drizzle of comets and asteroids over a long period

A gradual delivery rate allows nascent organic structures time to assemble and polymerize into functional molecules without being instantly destroyed by the heat of a single large collision.

What delivery scenario is considered more conducive to the gradual development of life on early Earth?
Earthwatercompositioncometlife