D. Marco, who rode to school on his bicycle this morning, arrived an hour early.
No, because it can be in a serious sense like "They had a sunny day at the beach" but in a mocking tone like "The day was sunny, mocking me at the loss of my wife in that fire, one year ago today"
What are you asking for here
The answer to the riddle is "none"
Lets define 'direct object'; "The object that directly receives the action of the verb.
In this case, the direct object is worms.