Just did the test I this hope it helps someone in the future!
Answer:
A gear is a rotating circular machine part having cut teeth or, in the case of a cogwheel or gearwheel, inserted teeth (called cogs), which mesh with another toothed part to transmit torque. A gear may also be known informally as a cog.
Answer:
A) enchanting
Explanation:
The author makes the passage feel enchanting with deep discriptions about the setting.
Answer:
A, The science of solar energy.
- sorry if its incorrect. i hope this helped at all.