Answer:
Marvin's IQ score most likely falls between C. 35 and 49.
Explanation:
Marvin fits the description of people with moderate intellectual disability, who have an IQ of 35 to 49. People with moderate intellectual disability are capable of communicating in a simpler level, but show signs of development delays. They can often take care of themselves, although some need help or more instruction than a typical person. They can learn basic safety skills, but have problems in social situations due to their difficulty in interpreting social cues.