Help fast please time is almost out

4. Everyone seemed to be alone, so I decided to make a new friend that night.

Explanation:

A compound sentence is a sentence that has two independent clauses. An independent clause is a sentence that can stand on its own and needs no further clause to complete is for example; "My name is woke2008" or " helps people answer questions".

A compound sentence mixes two independent clauses with the help of a coordinating conjunction such as for, and, nor, but, or, yet, and so.

Sentence 4 is a compound sentence because there are two independent clauses which are; "Everyone seemed to be alone" and "I decided to make a new friend that night".

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type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

wheres the options? i dont think this can be solved with out the options