Directions: In the following sentence, four words are highlighted in bold. One of them may or may not be redundant and if removed from the sentence, should make the sentence both contextually and grammatically correct. Mark the word as your answer. If no word is redundant, mark 'No improvement is required' as your answer.

The two (A) universities have to cooperate together (B) in the development (C) of a new (D) industrial process.