Kathy Denver is preparing to launch a home security firm. The team of people that

The group of people that will launch Kathy's firm is called New Venture Team

Explanation:

As per the definition, a new venture team can be understood as a group of people who are -

of some already existing firm and plan to develop a separate new firm which is fully functional as a new firm.

In the question the people in the group are already a member of some firm and prepared to launch a new firm so this group will be termed as new venture team.

The answer is "She should pay with a credit card".

A credit card is a plastic card that gives you a chance to get to as far as possible your Visa backer gives you. A credit limit resembles an advance. Notwithstanding, rather than giving you the full advance in real money, the bank gives you a chance to take an a significant part of the credit as you need at once and enables you to reuse the advance again and again as long as you pay back what you've obtained.  

The credit card issuer gives you a specific measure of time to pay back the whole sum that you've acquired before your charged intrigue.