Which of the following best describes 'scant'?

The term 'scant' is best described as relating to something that is insufficient or lacking in quantity or degree. When something is referred to as scant, it suggests that there is not enough of it to meet a particular need or expectation. This can apply to various contexts, such as resources, supplies, or even efforts, where what is available falls short of what is necessary or desired.

In contrast, the other terms do not align with the meaning of 'scant.' 'Excessive' implies an abundance that far exceeds what is needed, while 'moderate' indicates a balance or average amount, and 'sufficient' denotes an adequate quantity that meets requirements. Therefore, the clarity of 'scant' as insufficient makes it the most accurate descriptor among the options provided.