Final answer:
The two true statements from the given options are C. The sum of 8 and 21 is rational and E. The product of it and 5 is rational.
Step-by-step explanation:
The two true statements from the given options are C. The sum of 8 and 21 is rational and E. The product of it and 5 is rational.
C. The sum of 8 and 21 is rational because it is the sum of two integers (whole numbers) which is always a rational number.
E. The product of it and 5 is rational because it is the product of a rational number (it) and an integer (5), which is also always a rational number.