Superlative is the most difficult, but imperative maybe some what difficult
Answer:
Martin Cooper, the father of the cell phone, was an American engineer who is known for inventing the first handheld mobile phone. He brought it to the market in 1983.
Explanation:
everything else is ok
Answer:
A
Explanation:
If you read sentence 3, you'll see that it says "a bunch." This is very informal. D could've been a contender, but it was needlessly wordy and it made the paper hard to read. So, A is the correct choice. :)