HELP plot means:
any entry into an area not previously occupied
any large group of people traveling together
a sheltered port where ships can take on or
discharge cargo
a small area of ground covered by specific
vegetation

A small are of ground covered by specific veggies.

Explanation:

A plot is usually used when talking about gardening or buy a piece of land, all the other answers don't apply so it is the one I indicated above.

any entry into an area not previously occupied

Explanation:

d.he wanted to send diplomats to communist countries.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts