You are assessing a group of 3- to 5-year-olds on locomotor skills. One 3-year-old boy can't gallop while participating in your assessment. However, when you see him later in the day on the playground, he is galloping. What constraint is most likely influencing the motor behavior of this child?a. individual structuralb. environmental socioculturalc. environmental physicald. task (equipment)e. task (rules)