The heart of any team is ____ by members for joint performance.

A) shared commitment
B) shared skills
C) hard work
D) influence

A team cannot function effectively without a shared commitment among its members. It refers to the dedication and loyalty of each member towards the team's goals and objectives. Having a shared commitment creates a sense of unity and motivates team members to work collaboratively towards achieving their common goals. Shared skills, hard work, and influence are important, but without a shared commitment, a team may not be successful in its endeavors.