Adorld for ever be the God unseen, Which round the sun revolves this vast machine,
Though to his eye its mass a point appears:
Ador'd the God that whirls surrounding spheres,
Which first ordain'd that mighty Sol should reign
The peerless monarch of th' ethereal train:
Based on your understanding of its meaning, select the root of the word ethereal.
Old English äther, "one or the other"
Greek aither, "upper air"
Latin dies, "day"
-jal, "of or related to"

see explanation.

explanation:

1. buoyant: happy and confident (e)

2. euphoric: in a state of great happiness (a)

3. jubilant: having a feeling of great happiness and excitement (b)

4. rapturous: feeling or expressing great joy (d)

*note that the difference in 1-4 can be shown by signal words such as "in a state of" for the term "euphoric," as "euphoric" would describe a state of euphoria.

5. untroubled: calm and tranquil (c)

6. cajole: to talk coaxingly and flatteringly (i)

7. harangue: to express oneself at considerable length (h)

8. quibble: to evade the truth of the point at issue by arguing over trifles (g)

9. whine: to complain in a childish, fretful manner and in a nasal tone (j)

10. rant: to talk bombastically (f)