How did president nixon react to the watergate investigation? a. he began taping conversations. b. he offered bribes to journalists. c. he acted to cover up crimes. d. he admitted to ordering a burglary?

C--he acted to cover up crimes: Nixon immediately worked to cover up and get rid of evidence tying him to crimes. 

Nixon publicly denied allegations and privately worked to cover up the scandal known as Watergate. As evidence mounted against him, he knew he could no longer deny his involvement or perceived involvement. He resigned from office to save face and save the process of an impeachment.