"a. After the rain ended, the sky became blue" would contain an independent clause and a dependent clause, which makes it a complex sentence, since the latter half wouldn't be the same without the former half.
C) "During the 1300s, a secret passage helped free an English king who was taken captive by his enemies."
Explanation:
<u>A topic sentence must convey the idea of the whole paragraph.</u> <u>In that sense the paragraph here works on the idea of secret passages being historically significant</u> in the important events that changed the course of history.
Thus either the first sentence of the paragraph or this sentence fit the description stated above. Out of all the options given this statement directly refers to the theme and thus is the topic sentence.
B.
The author thinks that people need avoid land inhabited by wildlife in order to effectively practice conservation.
It's still a fact taken straight from a website and is not in your own words or at least cited
Answer: the word 'if'
Explanation: A conjunction is used to coordinate or connect words and clauses in sentences.
