Answer: 5
Step-by-step explanation:
Using the line of random numbers provided, we can see that the first trial of the simulation resulted in 5 "adulthood" responses. To determine this, we need to count the number of times that the digits 0, 4, 2, and 2 appear in the trial. These digits represent "adulthood" according to the coding system provided. We can see that these digits appear 5 times in the first trial of the simulation.