Final answer:
Option d) Explore and ask broad unanswerable questions about the meaning of life most accurately reflects the mental or intellectual change in adolescence. This aligns with the developmental milestone of forming one's own identity and system of moral and ethical values, increasingly thinking abstractly, and seeking independence.
Step-by-step explanation:
The mental or intellectual change in adolescence that is described by the ability to think abstractly, consider multiple points of view, and question societal norms is most accurately represented by option d) Explore and ask broad unanswerable questions about the meaning of life. This aligns with the stage of cognitive development known as formal operational thought, where adolescents are starting to think logically about hypothetical situations and are forming their own ideas and identities. During this time, they are developing their system of moral and ethical values, distancing themselves from their parents, seeking independence, and are heavily influenced by their peer group.