A tercet is a three line stanza.
It's not a genre, nor a rhyming scheme, nor is it a figure of speech. Tercets usually have more than 4 syllables per line.
The adverb clause in this sentence is 'before class starts', and it modifies 'meet', so A is the correct answer.
Answer:
hopefully that helps
Explanation:
1. was . adv mod long
2. was . adv mod shining
3. will. adv mod call
4. suddenly. adv mod pounding
5. yesterday. adv mod visited
6. fiercely , angrily .adv mod growled
7. unusually .adv mod heavy
8. seldom. adv mod goes
9. always. adv mod does
10. amazingly well . adv mod works