Final answer:
In mathematics, a proportion or percentage of a quantity cannot exceed 100 percent or be less than 0 percent, meaning there is no such thing as a negative percentage. Option a
Step-by-step explanation:
A proportion of something refers to its size relative to the whole, and therefore it cannot be less than zero or more than the total amount of that something. The concept of proportion is well-rooted in mathematics, being part of the fundamental principles of ratios and percentages.
Given that proportions and percentages represent parts of a whole, it makes logical sense that they cannot exceed 100 percent, which stands for the whole, nor can they be less than 0 percent, as it would indicate a non-existent or negative portion, which is not possible in the context of proportions of real quantities. Therefore, the correct answer is that there is no such thing as a negative percentage. Option a