The classes were all held (verb) in the morning (adverb).
Work began (verb) promptly at nine o’clock (adverb).
The students found the illustrations (noun) of the problem (adjective) interesting and helpful.
Teachers located materials (noun) on different topics (adjective).
Classes (noun) like these (adjective) kept the students busy
Answer: A. Plant press
Explanation:
A plant press is a contraption that is used to store samples of plants. The plants are flattened and dried so that they can be transported from one place to another primarily to enable them to be studied.
The specimens that John Muir gathered therefore must have been plants which he then stored in his plant press.
Definitely the second definition.
I believe the answer to be a XD hope i helped correct me if i'm wrong.
