What is the proper answer and why?

According to the following paragraph obtained from: https://www.gofluent.com/blog/importance-of-writing-in-language-learning/

"As the global workplace forces us to improve our communication skills, we should pay further attention to our writing abilities since communication is transmitted more through writing than any other type of media. Being able to write well is a skill which will get you a long way in the workplace, partly because it is fairly rare in many places and writing specific types of documents takes great skill to do. So, as you master a new language, know that polishing your writing skills with it will likely to pay off in the longer term. And an even greater edge for any professional could be writing well in a global language or two."

What is the correct answer? and why?

– Writing skill is important in the workplace because:

**a. It is widely used for communication in the workplace.

b. It is not used in the workplace.

c. It is rarely used in the workplace.**