The correct answer should be C. contact
Intimacy and involvement come at later stages where the relationship has escalated more. Contact is the part of initiation.
Risk Group 4 agents cause serious or lethal human or animal disease and are readily transmitted. Effective treatment and preventive measures are not usually available. Examples include: Smallpox virus, Ebola virus. No bacteria, fungi, or parasites in this group.
The incans flourished from 1200 to 1535, until they were conquered by the Spanish conquistadors.
