Which statement best describes anticipating and profiling your audience when using social media?

a$.$ Because postings to sites like Facebook and Twitter are so brief and informal, there is no need to anticipate your audience.

b$.$ You should profile your primary audience only.

c$.$ If you don't actually know your readers, it is impossible to picture what they are like.

d$.$ You should adjust your tone, style, and content to accommodate the expectations and needs of your audience.