It is I have come.
present simple I / you / we / they come
he / she / it comes
past simple came
past participle come
-ing form coming
Coarse means rude or rough.
Thus the word that is best associated with the word coarse is B. Roughness.
Roughness is somehow similar to coarse, it shows cruelty or rudeness in some actions or words. Other term that can be used to describe it is being impolite.
Answer:
The word "protracted" means lasting longer than expected, or unusually long, so what protracted most clearly means based on the context of the excerpt is how the time period of celestial motion studies must have lasted unusually long.
A. She feels that Jennie wants the narrator child for herself
