Explanation:

- In the given passage, the context is about spiders and their ability to adapt to various environments.

- The phrase "They (3) ______ not live in bodies of water or in the air" requires a form of the verb “do” due to the plural subject "They."

- Option 1: "do" - This is the correct option because it grammatically fits with the plural subject spiders, hence: "They do not live..."

- Option 2: "did" - Past tense, not suitable as the sentence is in the present context.

- Option 3: "does" - Incorrect because "does" is used with singular subjects.

- Option 4: "done" - Incorrect because it is a past participle and does not fit grammatically in the sentence.

Option 1: do