Although armand has been in several fierce battles during the war, he awakens on the morning of a planned invasion completely blind. the doctors find no brain injury or injury to his eyes, but armand still cannot see. for most people, blindness would be a disturbing disability to develop, but armand is strangely unconcerned about his sudden blindness. the doctors suspect that armand has a(n) disorder.

If Armand has been in several fierce battles during the war, and suddenly awakens on the morning of a planned invasion with complete blindness for which the doctors find no medical cause. The doctors would suspect that Armand has a CONVERSION DISORDER. More so, that he has an unconcerned disposition towards the sudden blindness.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added