Which art style was characterized by simple forms made from natural materials?

It’s hard to say, I don’t know any styles that fit this exact description but I can give my two best guesses.

Environmental Art
- uses natural materials from the art piece’s environment as the media and basis for the artwork. Often used to make a statement about nature or environmental conditions.
(think Walter De Maria’s “Lightening Field”)

Art Nouveau
- usually an applied art that uses nature-inspired forms but not necessarily made from natura materials.
(think Alphonse Mucha’s “Daydream”)

sorry i couldn’t offer something more specific. hope you find what you’re looking for!

The answer is a.)

The answer would be online media like a social media. it does refer to forms of different media content created publicly by the end users since 2005 and would cover how people use social media.hope this would be of .