Ais a small group of people with complementary skills who are committed to a common purpose, performance goals, and approach for which they hold themselves mutually accountable.

team

Explanation:

A team is a small number of people with complementary skills who are committed to a common purpose,performance goals , and approach for which they hold themselves mutually accountable

There is one mistake in your paragraph it is number not group of people

Team

Explanation:

A team is a group of people with different or complementary skills working together to achieve a specific goal or project, and they are mutually accountable for each other. For example, an engineer, architect, accountant, etc working together to achieve a particular building project.

it would be d). more resources must be obtained to attain that combination of goods and services