I think the answer is the reason for his absence is quite simple to understand.
Answer:
Douglass does not respond to them, for fear they might be trying to trick him. Explanation:
1. BENEFICIAL : producing a favorable result.
2. DERMATOLOGICAL : having to do branch of medicine concerned with the skin.
3. OSTEOARTHRITIC : having a degenerative bone disease.
4. PATHOLOGICAL : relating to or caused by disease.
5. CREDENTIAL : that which entitles one to confidence, credit, or authority.
6. POLYTHEISTIC : pertaining to the belief in more than one God.
The southern sea by a country on the sea.