Final answer:
The heritability quotient in twins widely ranges and, based on the Minnesota Study of Twins Reared Apart, it is suggested to be around 40-60% for certain personality traits.
Step-by-step explanation:
The question concerns the heritability quotient in twins, which refers to the measure of how much of the variation in a particular trait can be attributed to genetic factors. Based on the findings from the Minnesota Study of Twins Reared Apart, the heritability of certain personality traits was found to be more than a 0.50 heritability ratio. This suggests that the correct answer to the question 'The heritability quotient in twins is' would likely be C. 40-60%, as it aligns with the reported heritability ratios for traits like leadership, obedience to authority, sense of well-being, alienation, resistance to stress, and fearfulness.