Final answer:
The best inference from the passage is that the speaker was observant of their surroundings, likely noticing clouds while stirring based on the detailed sensory descriptions provided.
Step-by-step explanation:
The inference best supported by the passage is that the speaker noticed the clouds while stirring. The passage describes an array of sensory experiences such as the sawing of insects, the croaking of frogs, the hooting of an owl, and whispers of wind. These details suggest a heightened awareness of the environment, which could include noticing the clouds while engaged in a contemplative or mechanical activity like stirring.