Is this sentence a run on?

An important decision made by Parvana was when Parvana agreed to go outside to buy food while she was dressed as a boy.

No, it's not a run on sentence, but it is awkward.

How should I fix it?

Use the active voice.

Parvana made an important decision when she went outside to buy food while she was dressed as a boy.

Thank you Ms.Sue

You're welcome, Kate.

To determine if a sentence is a run-on, we need to examine if it contains two or more independent clauses that are improperly combined. An independent clause is a group of words that can stand alone as a complete sentence.

Let's break down the sentence into its components:
- "An important decision made by Parvana" is an independent clause because it has a subject ("Parvana") and a verb ("made").
- "when Parvana agreed to go outside to buy food while she was dressed as a boy" is a dependent clause because it starts with a dependent word ("when") and does not form a complete thought.

Since the sentence has only one independent clause and one dependent clause, it is not a run-on. The sentence is grammatically correct.