Question

that sun rose. the fog dispersed(use nominative absolute)

Answer 1

the sun rose and the fog dispersed
its is a sentence

Answer 2

HEY MATE!

_________________

Question- The sun rose. The Fog dispersed ( Use Nominative absolute)

Nominative Absolute - It is a part of the sentence which explains The forms of the verb and the subject in the sentence.

Answer- Having the sun risen, the fog disappeared.

Hope it helps you!