A _____ is described as spending most of one's time sitting and getting less than 20 minutes of exercise three times per week

Which of the following has not been proposed as a biological substrate of personality?

A) circadian rhythms B) arousal level C) neurotransmitters D) cardiovascular reactivity

At a recent birthday party that your daughter attended, she received a bag of colorful plastic toys. There were several animals, a few cars, and people. After you opened the bag, your daughter started playing with them

After a few minutes, you noticed that she was putting them into groups (e.g., animals, cars, people, etc.). What was she doing? a. sorting b. categorizing c. memorizing d. practicing fine motor skills