Sentence Correction

Clouds are formed from the evaporation of the
oceans' water that is warmed by the sun and rises
high into the atmosphere. condensing in tiny droplets
on minute particles of dust.
(A) Clouds areformed from the evaporation of the
oceans' water that is warmed by the sun and
rises high into the atmosphere, condensing in
tiny droplets on minute particles of dust.
(8) Clouds form by the sun's warmth evaporating
the water in the oceans, which rises high into the
atmosphere, condensing in tiny droplets on
minute particles of dust.
(C) Warmed by the sun, ocean water evaporates,
rises high into the atmosphere, and condenses
in tiny droplets onminute particles of dust to
form clouds.
(Dl The water in the oceans evaporates, warmed by
the sun, rises high into the atmosphere, and
condenses in tiny droplets on minute particles of
dust, which forms clouds.
(El Ocean water, warmed by the sun, evaporates
and rises high into the atmosphere, which then
condenses in tiny droplets on minute particles of
dustto form as clouds.

i have solved above SC. my question is whether B can be eliminated on the basis that "form" is a transitive verb and B does not have any direct object - what does cloud form ?
Also B seems an incomplete sentence as, after removing modifiers, B can be reduced to - cloud form - do we call such a sentence a fragment or something else