Which of the following describes a terminating decimal?

A terminating decimal is a decimal representation that has a finite number of digits after the decimal point. In this case, the choice of 0.75 is indeed a terminating decimal, as it can be expressed exactly with two digits after the decimal point and does not continue on infinitely.

To further clarify, the other options represent non-terminating decimals. For example, 0.333... represents one-third, which continues infinitely. Similarly, pi is an irrational number with an infinite sequence of non-repeating decimals, and the square root of 2 is also an irrational number that cannot be expressed as a finite or repeating decimal. Therefore, 0.75 stands out as the only choice that fulfills the definition of a terminating decimal.