Lauren is intelligent, compassionate, and has a great sense of humor.
Parallel structure means that you can remove the other elements in the list and the sentence would still make sense. Lauren is has a great sense of humor, doesn't make sense. It therefore lacks parallel structure.
Citations from sources you used.
Words such as because, since, while, before, during, after, and instead of can link independent clauses or phrases and are called conjunctions.
The correct answer is sedate.
In order to modify a noun <em>effect </em>found in this sentence, you need to use an adjective, and the word sedate is the only adjective among the possible options. Sedately is an adverb and it could modify a verb, sedateness and sedation are both nouns and therefore cannot be used here.
Answer:
B) foil
Explanation:
Because he is preventing her to go see her long-lost sister.