Question

look at the word in bold in paragraph 3.
3 bioluminescence is also used for protection. in order to hide from predators, some fish disguise themselves by producing downward - pointing light that looks like sunlight. other creatures use more involved tactics for protection. tiny plankton send out flashes of light when disturbed. this startles, confuses, or scares away predators. vampire squid shoot out a sticky bioluminescent gel that draws away an attackers attention, allowing the squid to escape. but a starfish - like creature called a brittle star has an even more special way of protecting itself: it has sticky bioluminescent \arms\ that can break off when its attacked.
4 one final way creatures are known to use bioluminescence is to attract mates. flashlight fish, for example, have bean - shaped bioluminescent
what is the meaning of tactics as used in the text?
ways of moving body parts
causes of pain plans or strategies

Explanation:

To determine the meaning of "tactics" in the text, we analyze the context. The paragraph describes how different creatures use bioluminescence for protection: some fish use light to disguise, plankton use flashes, vampire squid use gel, and brittle stars use detachable arms. These are all different methods or strategies for protection. "Ways of moving" is incorrect as the examples are about protection methods, not movement. "Body parts" is incorrect as the examples are actions/strategies, not body parts. "Causes of pain" is incorrect as the examples are about protection, not causing pain. So "tactics" means plans or strategies here.

Answer:

plans or strategies