Answer:
Explanation:
You don't want to be using a good vocabulary in an informal tone. You can use words that the meaning is not generally known. Not A
You certainly don't want to make your boss seem like an intellectual dwarf. Not B
The same comment can be made for D.
The answer is B. everyday language. You want to speak in simple terms using ordinary language and grammar.
In my dictionary (my brain), reckless means causing trouble nonstop. But you should look it up for a more accurate answer.
Hope I helped!
