1.My cat loves salmon she goes crazy when she smells it.
2.Donna lives in Orlando her school in Winter Park is not within walking distance.
3.Her husband is a software engineer he designs computer programs.
Explanation:
The three sentences above each have two independent sentences that should be linked by a punctuation (a comma, semicolon or semicolon) or by a preposition that connects them in a coherent way and makes the reading more fluid and paused. However, this did not happen and the two sentences were joined without any connective between them, but they are capable of providing a coherent and understandable thought. When this occurs, it is called a fused (or run-on) sentence.
I believe it is A due to "The lady made detailed plans, engaged the caterer and the orchestra well in advance" isn't exactly connect well and be hard to understand so you'd put a comma between "caterer, and".
