which could be a conditional relative frequency table?

Explanation:

Step1: Recall conditional - relative frequency property

In a conditional - relative frequency table, the sum of the relative frequencies for each row (or column depending on the conditioning variable) is 1.

Step2: Check the first table

In the first table, the sum of the values in the "C" row is (0.25 + 0.25=0.50\neq1), and the sum of the values in the "D" row is (0.25 + 0.25 = 0.50\neq1). So, it is not a conditional - relative frequency table.

Step3: Check the second table

In the second table, the sum of the values in the "C" row is (0.25+0.75 = 1), the sum of the values in the "D" row is (0.35 + 0.65=1), and the sum of the column - totals is also 1. This table satisfies the property of a conditional - relative frequency table.

Step4: Check the third table (incomplete in the question but from the steps of elimination)

Since the first table is not valid and the second one is valid, we don't need to check the third (incomplete) table.

Answer:

The second table (the one where the sum of values in each row is 1 and the sum of column - totals is 1) could be a conditional relative frequency table.