B-C are synonyms
conflagration/hostilities – A state of armed violent struggle between states, nations, or groups
Huddle – crowd together; nestle closely.
Congregation – a group of people assembled for religious worship.

Ultimately :finally, in the end.
Eventually :in the end, especially after a long delay, dispute, or series of problems.

Synonym of Eventually is Ultimately.

B-D are synonyms
quandary/dilemma – a state of perplexity or uncertainty over what to do in a difficult situation.
Hubbub – a busy, noisy situation.
Quarantine – kept in isolation

Pertinent – relevant or applicable to a particular matter

Desolate (miserable, forsake) and dejected are synonyms.

Summary :a brief statement or account of the main points of something.
Synopsis :a brief summary or general survey of something.

Synonym of Synopsis is Summary.

upright can mean either honorable or vertical; horizontal and supine are both antonyms of upright

Breed : mate and then produce offspring.
Germinate : begin to grow and put out shoots after a period of dormancy.

Synonym of Germinate is Breed.

Something that is pointless, fails to give any result.

Opening

Beautiful

downward slope