Question

review the details below.
stonefish have rough bodies without scales and avoid predators by blending in with rocks or hiding in crevices in shallow waters.
flounder have speckled skin that camouflages them from predators on the ocean floor and helps them prey on shrimp and worms.
the body of the american stick insect resembles a twig, making it virtually invisible to predators when it remains still.
choose the best topic sentence to introduce a paragraph containing these details.
some types of fish are able to use camouflage to avoid larger fish and to surprise their prey.
camouflage is just one of many ways animals outsmart the enemies who prey on them.
some animals rely on natural camouflage to conceal themselves from predators.

Explanation:

The details cover both fish (stonefish, flounder) and an insect (American stick insect) using camouflage to hide from predators; flounder also uses it to hunt, but the core shared trait is natural camouflage for concealing from predators. The first option only covers fish, which is too narrow. The second option focuses on camouflage as one of many methods, but the details only discuss camouflage, so this is off-topic. The third option accurately encompasses all the examples by referencing animals using natural camouflage to hide from predators.

Answer:

Some animals rely on natural camouflage to conceal themselves from predators.