Why would the answer you gave to part A motivate Hollywood to use more realism in special effects?

You didn't show what was answered in part A, but we can say that the search for authenticity in films, motivated Hollywood to use more realism in special effects.

Explanation:

The advance of science, technology and access to information has made viewers more intelligent. This intelligence made viewers more demanding with cinematographic works and were not easily deceived with false representations that do not represent reality. The population wants authenticity in Hollywood productions and representations of things that seemed real. This motivated the investment in increasingly realistic special effects to meet the demand that the public established.