Explanation:

- The passage discusses the ability of spiders to live in various habitats around the world, except Antarctica.

- Blank (1) in the passage suggests a wide range or diversity, so "vary widely" or "vary greatly" would fit well.

- Blank (2) requires a word indicating that spiders are capable of living almost anywhere, so "able" or "capable" would be suitable.

- Blank (3) needs a verb suggesting spiders do not inhabit certain places, so "do" is an appropriate choice.

- Blank (4) needs to connect "adapt" to environments, making "to" a suitable option.

- Blank (5) refers to an environmental condition contrasting with "wet."

- ?? Option 1: dry is the best choice as it directly contrasts with "wet."

- Option 2: dewy is incorrect as it means slightly wet.

- Option 3: muggy refers to humid conditions and does not contrast with "wet."

- Option 4: damp also means slightly wet, similar to "dewy."

The correct answer is Option 1: dry.