An essay about your favorite footwear should analyze the ideas of why you enjoy that specific footwear. Mostly you should analyze the looks and the feel of the footwear, meaning you should discuss why you feel comfortable in the footwear of your choice.
Magnifying object would be the answer to your question
The correct answer is A. reliable.
The writer was 'an authoritative source' because of her degrees, guest appearances, etc. Thus, she was a source you could rely on, she was reliable, given that she had experience to back her ideas up. Therefore A is the only correct answer.
There are four types of sentences. I'll list them below.
Interrogative sentences are questions: statements that end in a question mark (?). "What will they think of next?" is an interrogative sentence, as you can see from the question mark, so we can rule this one out.
Exclamatory sentences are statements that end in an exclamation point (!). "I simply adore cheese!" is one, because of its exclamation point, so this one isn't declarative either.
Now, things get a little trickier. There are two types of sentences that end in a period (.): imperative and declarative sentences.
Imperative sentences are commands--telling someone to do something. Which is imperative? "Please tidy your room." "We live in an amazing time." Obviously, "Please tidy your room" is an order, and so is imperative.
The only sentence left is "We live in an amazing time." This has to be a declarative sentence, which is simply a statement that ends in a period. This is a statement, and it ends in a period, so this sentence is a declarative sentence.
Answer: We live in an amazing time.