The type of subordinate clause is an adjective clause.
The sunspot has a central dark area which is called the Umbra, which appears dark because it's cooler than the rest of the sun's surface, with some lighter spots, and that center is surrounded by a lighter filamentary area, called the Penumbra, that flows outward. Hope this helps!:)<span />
1. If it's so easy, why didn't you answer it yourself?
2. The answer is C. Haiku. Haiku is a type of poem that consists of 17 syllables in intervals of 5:7:5. Meaning, there are 3 lines in Haiku and in the first line there are 5 syllables, in the second line there are 7, and in the third, there are 5 once again. (respectively)
5-7 sentences should be good
Hope this helps!