PLEASE I NEED HELP How did Louis Daguerre create his innovative daguerreotypes?

A) Daguerre treated a negative so that it produced a shallow depth of field.

B) Daguerre exposed a negative for a full day to capture intense light and shadow.

C) Daguerre projected an image onto a metal plate that was then etched by using fine lines.

D) Daguerre captured a permanent image with rich tonal variations and fine detail.

Acurator decides to display an eighteenth-century painting in a windowless room with controlled temperature and humidity. pick the answer that best describes the reasons for her choice: (1 point) 1)the curator wants to make sure that the temperature and humidity are comfortable for visitors. 2)keeping the temperature and humidity at a set level will save money. 3)the ultraviolet rays will damage the painting by fading and flaking the paint. 4)ultraviolet rays will fade the paint pigment and high temperature and humidity will damage the paint.