The nurse is discussing sexually transmitted infections (STIs) with a 17-year-old student. Which cognitive development theory should the teaching plan be based on?

The correct answer is C: 'Abstract thinking.' According to Piaget's theory of cognitive development, adolescents, typically around the age of 12 and older, enter the formal operational stage where they can think abstractly and reason about hypothetical situations. When discussing complex topics like STIs with a 17-year-old student, it is essential to base the teaching plan on abstract thinking. Choice A, 'Sensorimotor reactions,' is incorrect as it pertains to the earliest stage in Piaget's theory (birth to 2 years old) focusing on sensory experiences and physical interactions. Choice B, 'Limited cause and effect understanding,' does not align with the cognitive abilities of a 17-year-old who is capable of more advanced thinking. Choice D, 'Concrete thinking,' is also incorrect as it refers to the stage before formal operations, where individuals think more concretely and struggle with abstract concepts.