Answer: While prancing through the meadow, the lamb was startled by the meteor
Explanation: They are both right but the 2nd sentence makes more sense to wright.
I would believe this is a complex sentence. It contains a dependent and an independent clause to create one full sentence and a conjunctionn cannot combine the two clauses because of the questioning word in the very beginning of the sentence.
Yes, this is a run-on sentence. It should be changed to - "My favorite furniture company offers more than one hundred different fabrics. You can order free fabric swatches to see what looks best with your decor."