Let's summarize points:
Option 3: This option is ruled out because it mentions subliminal images, whereas the passage emphasizes Packard's belief in supraliminal images.
Option 1: Similar to option 3, this option mentions subliminal messages, which is not aligned with Packard's emphasis on supraliminal images.
Option 4: This option correctly states that people are not aware, aligning with Packard's belief in supraliminal images.
Option 2: This option is rejected as it suggests people are aware, which contradicts the information presented in the passage.
Your careful consideration of the choices in relation to Packard's beliefs and the information in the passage led you to the correct conclusion that Option 4 is the best choice.
Read the sentence and infer the writer's tone: "The politician's speech was filled with lofty promises and little substance, a performance repeated every election season."