3. Which of these statements is true?

A. Waste isn't a problem in reaching group goals.

B. Individual productivity is necessary for group productivity.

C. Individual productivity is more important than group productivity.

D. Sacrifice isn't necessary to achieve group goals.

The true sentence is the following one:

B. Individual productivity is necessary for group productivity.

Imagine a work in a group, where the people all receive their personal tasks that they will later incorporate into the group work. If each person is not productive on their own task then the whole group will not be productive!