Question

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation.
angie could spruce up her bedroom by purchasing a new headboard for her bed or making one using fabric stretched over plywood.

Explanation:

Step1: Analyze the sentence structure

The sentence presents two alternative actions Angie could take: "purchasing a new headboard for her bed" and "making one using fabric stretched over plywood". These are two independent clauses (or parts of a compound predicate) joined by "or". When joining two independent clauses (or in this case, two verb phrases acting as alternatives) with "or", a comma is typically used before "or" to separate the two options clearly.

Step2: Apply punctuation rule

So, we add a comma before "or" to make the sentence structure clearer. The revised sentence is: Angie could spruce up her bedroom by purchasing a new headboard for her bed, or making one using fabric stretched over plywood.

Answer:

Angie could spruce up her bedroom by purchasing a new headboard for her bed, or making one using fabric stretched over plywood.