We can solve this question by applying a little bit of number sense
We are told that n is a positive integer,
So, the smallest possible value of \(n\) is \(1\)

At this point we might recognize that, when \(n = 1\), the two quantities are equal. We get:
Quantity A: \(\frac{1}{n} + n = \frac{1}{1} + 1 = 1 + 1 = 2\)

Quantity B: \(2\)
The two quantities are EQUAL



At this point we can readily see that, when \(n\) is greater than 1, Quantity A will always be greater.
For example, when \(n = 10\), we get:

Quantity A: \(\frac{1}{n} + n = \frac{1}{10} + 10 = 0.1 + 10 = 10.1\)

Quantity B: \(2\)
In this case, Quantity A is greater

Answer: D

Cheers,
Brent