The main points of the paragraph are: 1. A multisensory illusion, dubbing a different visual cue to audio, makes the subject perceive a different sound. (Important point) 2. This illusion is called McGurk effect. (Important point. Related to 1) 3. An impactful subject of research as it demonstrates multisensory integration. (Secondary point. 1 and 2 can stand without this point) Option A: Covers 1 and 2. Hence, a plausible option. Option B: It distorts what the author is trying to say. It draws a conclusion out of the results of the study instead of paraphrasing the passage. Option C: Option C covers only 3. It does not mention 1 and hence is not a good summary. Option D: Mentions only 1. Not an apt summary. Hence, the answer is Option A.