Responding practice

A co-worker hands you a copy of a report he just completed.  He tells you he's quite sure it is okay as is, but would like your judgement on the quality of the final draft before sending it to the manager.

You read it and notice that some claims made in the conclusion, directly contradict claims made in the beginning of the report.  He approaches your desk and say, "Well, what did you think about it?"

Three styles of responding:  Tell me in each area how you would respond.

Aggressive

Passive

Assertive