Correct answer is (c) \frac{7}{2} and \frac{10}{2}
To elaborate: When we place the 4 given pairs and the number on the number line we observe that the number \frac{32}{9} lies between the pair \frac{7}{2} and \frac{10}{2}, while other options fail to capture the given number between them. Hence the correct pair is \frac{7}{2} and \frac{10}{2}.