Answer: Part: Rotten mangoes question
Whole: Penguin question, shirts in a closet question
Percentage: Household pets question, perfect attendance question
Explanation:
Questions that ask for the percentage of something are always percents (household pets and perfect attendance). "How many shirts are in the closet?" means it is a whole because it isn't asking for a particular type of shirts like "How many long sleeve shirts are in the closet?". The question about penguins is also a whole because it isn't asking "How many emperor penguins are in the zoo?" (which is a specific kind of penguins). The question about mangoes is a part because it isn't asking for "How many mangoes are in the box", (which would be a whole because it is not specified to the type of mangoes), but it is asking for a specific kind of the mangoes (rotten mangoes).