Answer:
Subordinate clause
Explanation:
The clause "when he was first observed" is a subordinate clause
When you are measuring your yourself or anything else you need to do it carefully and so you get the right measurements
The correct answer is D) harness bells on a horse and wind during a snowfall.
A and C aren't correct because the narrator isn't speaking throughout the poem.
B isn't correct because there is no sleigh, only a man on a horse.