Answer:
A. Common terminology
D. Integrated Communications
Explanation:
Common terminology
This involves the use of standard and common terms in communications ensuring it's clear and efficient. It includes the use of clear texts and plain languages in communications. When the operations chief reminded everyone to use plain languages, he supported the NIMS characteristics of common terminology.
Integrated Communications
This involves the use of hardware communication devices like radios, mobile phones and so on. They are used in transferring information from one place to the other. Frequencies to be used are predetermined. Hence, when the operations chief request that all response communications be conducted using a pre-determined set of frequencies he supported the characteristics of NIMS integrated communications.