Which BEST explains why special effects in the 1960s and 1970s are not as realistic as those used today? They depended on optical illusions due to limited technology.

Symbolism was more important than realism in films of earlier eras.

Most films did not use any kind of special effects, so they were rare.

Artists had not yet deconstructed Renaissance techniques for creating depth.

A

Explanation:

They depended on optical illusions because they weren't able to generate the things we can (they didn't have computers and such)

they depended on optical illusions due to limited technology.

"prior to 1910, these new artists were called neo-impressionists, and they believed that "modern paris" was the proper subject for their paintings."

this is the text provided by the program, disregard other answers, as they are confusing and based on loose knowledge of the subject.   : )