Based on the options provided, it seems there are two individuals mentioned: Marco and Maribella. However, there is no specific data or tables visible in your message that indicate how much time each person spends on homework.
To appropriately respond to the question regarding who spends less time on homework, one would typically need to compare the specific amounts of time each person dedicates to their homework.
Since the actual data is not included, the only logical conclusion from the provided responses is:
"There is not enough information to tell who spends less time doing their homework."
If you have specific numbers or data that could clarify the situation, feel free to share them, and I can help you analyze it!