D. Marco, who rode to school on his bicycle this morning, arrived an hour early.
Answer:
The wrong answer is b, that some other gold diggers had rigged the sled.
Explanation:
D, with the most simple. When writing speeches/voicing speeches, always go from simple to complex so your listeners or readers can follow the point you are trying to get across.
Run on sentence. A comma splice is a sentence that uses a comma when it should instead be either a colon, semicolon, or conjunction, and there is no comma so that is wrong. There should also be a period between bed and he. Here is what the complete senctwnces would look like: My dog sleeps beside my bed. He wakes me up in the middle of the night to let him out.