The correct answer is B. Fused sentence
Step-by-step explanation:
In grammar, a fused sentence is type of error that occurs as two independent clauses or clauses that express a complete sentence are placed or fused together, which means there is no a conjunction or a punctuation mark such as a point (.) or semicolon (;) between them to separate them but they run-on together. This is the case of the sentence "The 1957 Chevy nomad is one of the finest vehicles ever made my mother drives one that is in perfect condition" that is divided into sentences "The 1957 Chevy nomad is one of the finest vehicles ever made" and "my mother drives one that is in perfect condition" and therefore an element between them should be placed, but as neither a punctuation mark or a semicolon was used this is an example of fused sentence.