Context summary: several boys skip school, move beyond the school area to a secluded canal, and excitedly try to catch tiny fish in slow, dirty water; Glen leads the action. Adapted CTET Q137: For the language-learning/comprehension idea linked with phrase, stream, small, dirty, means, lazy, water, which choice is the best-fit answer?

1. tired
2. slow
3. lethargic
4. murky