To determine who would be more successful in their math class based on the information provided, we would need to know the amount of time Marco and Maribella spend on homework.
If Marco spends more time on homework than Maribella, then the correct response would be:
"Marco would be more successful, because he spends more time on homework."
Conversely, if Maribella spends more time on homework than Marco, the response would be:
"Maribella would be more successful, because she spends more time on homework."
If both spend the same amount of time on homework, then the response would be:
"They are equally successful, because they spend the same amount of time on homework."
Without knowing the specific hours or details, I can't definitively choose one of the options, but you can use this reasoning to select the appropriate answer based on the time each individual dedicates to homework.