7. Reflection of the object as a whole when a stimulus has excited a receptor is a process of: a) attention b) sensation c) thinking d) perception 8. A dividing point between energy levels that do and do not make a detectable effect is: a) just noticeable difference b) an absolute minimal threshold c) an absolute maximal threshold d) a threshold of difference 9. Volume of child's attention is: a) 5-7 objects b) 5-6 objects c) 7-9 objects d) 2-3 objects 10. The second stage of development is: a) the stage of preoperational thought b) the sensorimotor stage c) the stage of formal operations d) the stage of concrete operations

7. The correct answer is d) perception. Reflection of the object as a whole when a stimulus has excited a receptor is a process of perception. Perception involves the organization, interpretation, and integration of sensory information to form a meaningful understanding of the environment.<br /><br />8. The correct answer is d) a threshold of difference. A dividing point between energy levels that do and do not make a detectable effect is known as a threshold of difference. It represents the minimum difference in stimulus intensity required for a person to perceive a difference between two stimuli.<br /><br />9. The correct answer is d) $2-3$ objects. The volume of a child's attention refers to the number of objects or stimuli that a child can focus on or attend to at a given time. For young children, the volume of attention is typically limited to $2-3$ objects.<br /><br />10. The correct answer is b) the sensorimotor stage. The second stage of development, according to Jean Piaget's theory of cognitive development, is the sensorimotor stage. This stage occurs from birth to approximately 2 years of age and is characterized by the development of motor skills and the understanding of object permanence.