PLEASE HELP ASAP Which instruments were used during the classical period and why did the composers choose those instruments?

THE LAST PART OF THE QUESTION IS THE MOST CRUCIAL PART, IT'S THE PART I DON'T KNOW!​

Write an art critique of edvard munch, separation 1986

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.

The invention of made it possibe for impressionist artist to leave their studioand paint outdoors