Encrustations may be caused by biodegradation of water agents

When planning a news conference, invited special guests can enhance the event's message. These guests:

a. should never be allowed to answer questions because this is your news conference, not theirs. b. may speak or answer questions, depending upon circumstances. c. should always be seated at the back of the room. d. should have their own press agents.

Principles of roadway safety include evaluating the safest _________________ _________________ when arriving at a roadway incident

Fill in the blank(s) with correct word