Candace works for a small marketing firm that focuses on ads that pop up on social media web pages. Candace most likely works in
O Marketing Research.
O Professional Sales.
O E-Marketing.
O Distribution and Logistics.

O E-Marketing.

Explanation:

E-marketing is Electronic marketing. It is also known as online marketing and refers to marketing done through the internet.  E-marketing combines traditional marketing concepts with modern technology. It involves marketing a company's products and services through the internet using computers and mobile devices as mediums.

you're crazy if you think that someone is going to write a 500 word report for you.

you have to put the parentheses like this:

in fact, you have to perform the operation inside parentheses first, and then proceed in order: