Explanation:

Alright, let’s crack this.

- The original set: {25, 19, 36}.

- 25 and 36 are perfect squares (5², 6²), 19 is not. The “pattern” looks like: two perfect squares, one number that isn’t.

- Option 1: {9, 49, 16}

- 9 = 3², 49 = 7², 16 = 4². All three are perfect squares. Not the same as the original set.

- Option 2: {20, 28, 32}

- None are perfect squares. The pattern doesn’t match.

- Option 3: {30, 25, 35}

- 25 = 5², but 30 and 35 are not perfect squares. Only one perfect square—doesn’t fit.

- Option 4: {36, 23, 48}

- 36 = 6², 23 and 48 are not perfect squares. Two not, one is—that’s the match.

So, here’s the answer ??

Option 4: {36, 23, 48}