Final answer:
The key changes in identity and time when individuals reach identity achievement include developing a stronger sense of personal identity and a personal system of moral and ethical values. Peer influence and acceptance are important during adolescence, and most teens exhibit a strong desire to conform to their peer group.
Step-by-step explanation:
A consensus is developing that the key changes in identity and time when many individuals reach identity achievement is developing a stronger sense of personal identity and a personal system of moral and ethical values. During adolescence, they start to develop their own system of moral and ethical values, and they generally spend much more time with their peers, and peer influence and acceptance are very important. This is especially true in the early stages of adolescence, where most teens exhibit a strong desire to conform to their peer group.