Answer choice B. contains the prepositional phrase "on January 20."
No improvement to this sentence is necessary. It makes perfect sense on its own and sounds right. "Either" always takes an "or" else the word wouldn't make sense, as it's meant to contrast binary options.
eg.
I'm either going to eat food or drink water.
Answer:
They provide false reasons in support of a claim, making the writer seem less credible.
Explanation:
The use of fallacy is using faulty arguments to support the opinion. At the first glance, the fallacious opinion can seem better than it is, but it is not supported by facts, and the reader can have the feeling the writer is dishonest.
By using fallacies, the writer is discrediting his work and words.
C is correct in this situation.
Chalk is a white powder made of soft limestone called calcium carbonate. It can be found in both a powder substance or a more firm rock-like form. One use of the powder form is for gymnasts. They use the calcium carbonate powder from to protect their hands from blisters when doing work on the bars, pomel horse, or rings. The harder form of calcium carbonate can sometimes be found in the shape of a long round cylinder and is used as a writing implement on blackboards. Sometimes it is mixed with a coloring agent and used to draw pictures on sidewalks.