Ever since the beginning of the new school year, jason spent thirty minutes every afternoon drilling joshua, his younger brother who is in the fourth grade, on basic multiplication and division problems. three months later, joshua responds almost instantly with the answer to basic multiplication and division problems. considering what you've read in chapter 6 on the biological basis of memory, which of the following has probably happened to joshua? select one: a. state-dependent retrieval has occurred. b. structural and functional changes have occurred in the specific neurons involved in his new memories. c. imagination inflation has reversed the course of normal forgetting. d. the repeated practice sessions successfully blocked long-term potentiation from occurring, allowing the new memories to consolidat