Cletus thought they were draining the swamp, but Ace was convinced they were better off building a bridge across it. Their project team was doomed to failure owing to their:

A) poorly defined team roles.

B) unclear goals.

C) lack of motivation.

D) poorly defined team interdependencies.

The answer to the question is:

unclear goals (B)

Explanation:

The two team members Cletus and Ace had clearly opposite opinions of the project at hand, these could only be explained as them not knowing what exactly their goals were. For clarity, let me define what goals are; a goal is what one hopes to achieve in a venture. For Cletus, at the end of the project, the swamp will be completely drained, while for Ace, a bridge will be built across the swamp, so they will program their minds and work towards their personal goals. In a team, the process of setting goals towards a project is usually done by the team leader, which was obviously not done in this case, or even if it was done, was not done well to the understanding of the team members.