According to weight-rounding standards, a diamond that weighs 0.759 carat rounds to what weight?

When rounding diamond weights according to standard practices, weights are typically rounded to the nearest hundredth of a carat. In this case, a diamond weighing 0.759 carat is rounded based on the digit in the third decimal place.

The relevant numbers in this example are:

• The first two decimal places indicate the weight as 0.75.

• The third decimal place is 9.

Since the digit in the third decimal place (9) is 5 or greater, it means that you round up the second decimal place by one. This results in 0.76 carat.

Thus, based on these rounding standards, the correct answer is that a diamond weighing 0.759 carat rounds to 0.76 carat.