The correct answer is C. complex.
A complex sentence contains one independent clause and at least one dependent clause. Here, the independent clause is <em>Galileo, the first astronomer to use a telescope, confirmed the theory </em>and the dependent clause is <em>that the earth and planets circle the sun.
</em>A is incorrect because a simple sentence contains only one independent clause; B is incorrect because a compound sentence contains at least two independent clauses; D is incorrect because a compound-complex sentence contains one independent clause and at least two dependent ones.
We need to complete the sentence by filling up the blank space and we are given with two choices, either we choose "won't" or "wo'nt". This problem is a matter of English knowledge and we know that there is no such word as wo'nt so we will not choose this. Therefore, the correct answer is the option "won't" which can be also written as will not, it just the same won't and will not. To complete the sentence, we have it below:
Native plants are kept in check by surrounding community of plants and animals, so the native plants won't be invasive.
Answer:
B
Explanation:
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