Final answer:
The specific purpose statement for an informative speech about a motion picture camera is to inform the audience about the major parts of the camera.
Step-by-step explanation:
The specific purpose statement for an informative speech about a motion picture camera would be option 1) To inform my audience about the major part of a motion picture camera. This purpose statement clearly states that the goal of the speech is to provide information about the main components or parts of a motion picture camera. It aligns with the nature of an informative speech, which aims to explain, describe, or demonstrate a topic.