Hurry I need the right answer ASAP Its a timed test Which best describes the policy of containment?

dividing a country into different sections
advancing militarily against communist countries
limiting the spread of communism to new countries
being unable to reach agreements with other countries

Your company has used the same logo for years. a few weeks ago you decided it was time for a fresh look, so you hired a graphic designer. she provided you with several different designs, and you like them all. you want to acknowledge her hard work, maybe in a form that she could use in her portfolio. what is the best way to accomplish this goal?

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

Which of the following is a problem in the health care system of the united states? a. too many doctors in rural areas b. too many doctors who are general practitioners c. fraud d. costs that are too low