You have to compare to teacher to something else like: "My teacher is as sneaky as a fox" ; Something like that.
I think your answer should be C. The writer must be prepared to read his essay out loud.
Firstly look if there was an indoor or monitored ice-skating rink in the local area; if looking for a natural place to ice-skate, ice must be at a temperature of <span>−3.5 °C or lower, for safe skating. You must look for the correct temperature and weather conditions. </span>
Answer:
to ensure that all of the facts in your report are accurate
In my opinion, the correct answer is <span>C. As Jake was reading the email from June yet again, the flight attendant coughed gently to get his attention.
A complex sentence has one independent clause (that can stand on its own), and two or more dependent (subordinate) clauses. In this case, the independent clause is "the flight attendant coughed gently to get his attention". The dependent one starts with a subordinator "as". The other options are compound sentences - made of two or more independent clauses which are connected with coordinators (but, and).</span>