Please help with all!!! need asap!

1. Choose the correct comma placement in the following sentences.

He proofread his e-mail ("and," ",and" OR "and") then sent it to his manager.

During the ("presentation" ",presentation" OR "presentation," please take notes.

I dont know when the consultant will visit again ("and", ",and" OR "and,") we need more supplies for the office.

Brian wrote a draft of the report ("and", ",and" OR "and,") then a team member proofread it for him.

The team met for the meeting on Tuesday ("and", ",and" OR "and,") reconvened on Wednesday.

2. Read the following sentences, and identify the error.

Gilberto recruited job applicants for the company that showed promise.

The error in this sentence is a (fragment, comma splice, lack of parallelism, or misplaced modifier).

3. My tasks this week are to confirm hotel reservations, finalize the presentation slides, and rehearsing the presentation.

The error in this sentence is a (fragment, comma splice, lack of parallelism, or dangling modifier).

4. "You are writing a report on Blizzard Betty, a company that manufactures winter sports gear. In one part of the report, you describe the companys various incentive programs. Each incentive program has its own section."

For the section of the report describing Blizzard Bettys top sellers program, which would be the best first sentence?

A) A popular sales business gives big incentives to its top sellers.

B) Blizzard Betty gives ski and snowboard equipment to its top sellers.

C) Many businesses give large incentives to their top sellers.