What was the first simple result of dust particles sticking together in planet formation?

Correct answer: Small solid clumps formed

In the early solar nebula, solid dust grains collided and began sticking together because of their mutual attraction and low-speed contacts. The immediate, simple result was the formation of larger small solid aggregates or clumps. With continued accretion, these aggregates could grow into planetesimals and, later, protoplanets. Thus option C describes the first step in the sequence rather than a later planetary outcome. Oceans formed only after suitable planets developed and cooled, and the atmosphere did not simply end. A galaxy breaking apart is unrelated to the local process of building planets in the solar nebula.