The first sentence is an example of (C) complex sentence because it contains one independent clause and at least one dependent clause. The independent clause is: "humans were interested in astronomy". Dependent clause is: 'even before telescopes were invented' (dependent because it cannot stand on its own'.
Second sentence is an example of (A) simple sentence because there is only one subject 'Haley's comet'
The correct answer would be USAGE DICTIONARY
Blackfeet : origin
The sun, to blackfeet, is origin
Yes i think he is so good , he helps serve our country
