Consider the following animals :

1. Hedgehog
2. Marmot
3. Pangolin To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?

Hedgehogs are small mammals that roll into a ball when threatened, exposing their sharp spines to deter predators. Hence, statement 1 is correct.

Marmots are ground squirrels that hibernate and live in groups but do not roll up when threatened. Hence, statement 2 is not correct.

Pangolins are covered in tough scales and roll themselves into a tight ball when they feel threatened. Hence, statement 3 is correct.

Therefore, the correct answer is 1 and 3.