Question

mother was cooking food. I was doing my homework (using" while")

Answer 1

$\huge{\mathfrak{Answer \ :-}}$

$<b>$

Mother was cooking food while I was doing my homework.

$\huge{\mathfrak{Thanks \ !!}}$

Answer 2

My mother was cooking food while I was doing my homework.

This is a complex sentence that adds a lot of crux to writing.

The complex sentences are actually the neighbors and friends to the compound sentences.

The key difference between both is that, compound complex sentences would have two independent clauses wherein complex sentence would have at least on independent clause.