Question 10 of 10 The nature versus nurture debate is largely settled because most psychologists believe that both genes and environment play a part in development. Which of these might be an example of where the debate might not be resolved? A. Whether genes have an effect on a person's size B. Whether some forms of cancer have genetic cau C. Whether the environment has an effect on a pers ability to speak D. Whether the environment has an effect on an infa temperament

The correct answer is:<br /><br />**D. Whether the environment has an effect on an infant's temperament**<br /><br />### Explanation:<br />The "nature versus nurture" debate revolves around whether genetics (nature) or environmental factors (nurture) play a more significant role in shaping human traits and behaviors. While most psychologists agree that both nature and nurture contribute to development, certain areas remain less resolved due to the complexity of interactions between genes and environment.<br /><br />- **A. Whether genes have an effect on a person's size**: This is largely settled, as it is well-established that genetics significantly influence physical traits like height and body size.<br /> <br />- **B. Whether some forms of cancer have genetic causes**: This is also largely resolved, as many cancers are known to have genetic components, though environmental factors can also play a role.<br /><br />- **C. Whether the environment has an effect on a person's ability to speak**: It is widely accepted that the environment (e.g., exposure to language) plays a critical role in language development.<br /><br />- **D. Whether the environment has an effect on an infant's temperament**: This remains a more complex and unresolved area. Temperament is believed to have a strong genetic basis, but the extent to which environmental factors (such as parenting style or early experiences) shape or modify temperament is still debated among researchers.