Question

unlike the puffer fish, a hedgehog curls itself up into a prickly ball when it senses threats. its sharp spines will poke the tender nose of anything that tries to eat the hedgehog. how do puffer fish use spines to stay safe? puffer fish use spines to hide from predators. puffer fish use spines to swim faster and escape. puffer fish use spines to stretch their bodies for fighting. puffer fish use spines to look too dangerous to eat.

Explanation:

Puffer - fish have spines that stand up when they puff up, making them look large and dangerous to predators, thus deterring them from eating the puffer - fish.

Answer:

Puffer fish use spines to look too dangerous to eat.