The correct answer is option 2, which states that only pair 1 and 2 are correctly matched.

Let`s analyze each pair individually:

1. Orang-utan: Malaysia - This pair is correctly matched. Orang-utans are native to the rainforests of Malaysia and Indonesia, particularly Borneo and Sumatra.

2. Mountain Gorilla: Rwanda - This pair is also correctly matched. Mountain gorillas are primarily found in the Virunga Mountains, which spans across Rwanda, Uganda, and the Democratic Republic of Congo. However, the specific country mentioned here is Rwanda.

3. Chimpanzee: Morocco - This pair is not correctly matched. Chimpanzees are not native to Morocco. They are primarily found in Central and West Africa, including countries like Uganda, Democratic Republic of Congo, and Tanzania.

Therefore, option 2 is the correct choice as it correctly identifies that only pair 1 (Orang-utan: Malaysia) and pair 2 (Mountain Gorilla: Rwanda) are matched correctly. Pair 3 (Chimpanzee: Morocco) is not matched correctly.