The more you know, the harder it becomes to add new information to long-term memory

Which example shows experience-expectant brain development?

A. Tristan's parents let him climb all the time when he was young; therefore, he has very good balance and little fear of heights. B. Mari was born with a congenital cataract in one eye and received treatment too late; therefore, she lost the capacity to process visual stimuli in the affected eye. C. McKenzie's parents bought her a trampoline when she was 2 years old that she jumped on all the time and learned to do a flip at a very young age. D. Alex has loved playing with blocks and Legos from a very young age; now, that he is older, he has very good eye-hand coordination.

Mark is a heroin addict who always shoots heroin in his apartment. One day Mark goes to a different city, injects heroin in his hotel room and overdoses. Why did Mark overdose?

A. the heroin acted as a different unconditioned stimulus that prepared Mark’s body for the heroin. B. the apartment acted as a conditioned stimulus that prepared Mark’s body for the heroin. C. the different city acted as a conditioned stimulus that prepared Mark’s body for the heroin. D. the different city acted as an unconditioned stimulus that prepared Mark’s body for the heroin.