Answer: A. Contradict
Step-by-step explanation:
The Pentagon believes that using the Secure Electronic Registration and Voting Experiment (SERVE) is safe and secure and so encourages its use. Cybersecurity experts however, have an opposite opinion and believe that officials should not use the system.
The term used to describe a situation where the opinion of one party goes against that of the other is called a contradiction. A contradiction therefore exists here between what the Pentagon and Cybersecurity experts are saying.