How is writing different from face$-$to$-$face conversation?

Select one:

a$.$

When conversing, the document is a permanent record of your thoughts that must stand on its own. When writing, you can revise your thoughts based on feedback from the audience.

b$.$

When writing, it is easier to persuade an audience, because you have time to fully think out your ideas. When conversing, you have no opportunity to revise, so you have to get every word right the first time.

c$.$

When conversing, you can be more informal and express yourself more freely. When writing, you must always use a formal tone and seek to impress your readers with the logic and clarity of your writing.

d$.$

When writing, the document is a permanent record of your thoughts that must stand on its own. When conversing, you can revise your thoughts based on immediate feedback from the audience; most often, conversations are not recorded.