A ratio compares two values using which operation?

A addition

B subtraction

C multiplication

D division

In mathematics, a ratio is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the ratio 4:3). So, a ratio can be a fraction as opposed to a whole number.

The correct answer is division