How was Martin Luther King Jr. portrayed in the film? How is this view
different/the same from your previously held view of him?

The best answer in my opinion would be the last one. i hope this

Adjective clauses  begin with words such as that, when, where, who, whom, whose, which, and why. an essential (or restrictive)  adjective clauseprovides information that is necessary for identifying the word it modifies. so for example*** wrong= i the man gave me direction. example right ( i the man who gave me the  direction.