Answer:
The correct answer is letter "B": The team was disappointed that the proposal was rejected.
Explanation:
It is important to be clear in business writing. Some use stale or trite phrases in the attempt of providing the segments a more "professional" sound but most of the cases they end adding unnecessary, redundant words to the statements or vague pronouns such us in:
"The team was thoroughly disappointed that the proposal was totally rejected".
Thus:
"The team was disappointed that the proposal was rejected".
Provides specific, concrete nouns and adjectives.