Answer:
4. or 2.
Explanation:
My teacher explanied it to us like this! :D
A dependent clause can be used as an adjective when it qualifies a noun or a pronoun or as an adverb when it qualifies another adverb, a verb, or an adjective.
while a dependent clause cannot stand alone as a sentence (unlike an independent clause) because of the presence of a subordinating conjunction, it may serve as either an adjective or an adverb.
Example- Ben is willing to try anything that will improve his condition.
that will improve his condition (adjective: qualifies "anything")
To learn more about dependent and independent clause from the given link
brainly.com/question/798413
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Even though you didn't give us the fragment with the comma slice, it isn't really necessary here as we can answer just based on these 4 options here. All options apart from the second one are correct - only the second option doesn't fix the mistake of the comma splice, whereas the other options do but connecting the sentences properly.