Resilience may include having traits such as a positive self-concept, sociability, intelligence and scholastic competence, autonomy, self-esteem, androgyny, good communication and problem-solving skills, humor, and good mental and physical health. these traits are called:

Individual-level protective factors

Explanation:

Psychological resilience is the ability of the humans to recover very quickly from the difficult situation mentally and socially.

The traits shown by the resilient person are due to self-esteem, problem-solving skills, good health, self concept and many others which are considered individual-level protective factors as these factor help increase the well being of the individual.

Thus, individual-level protective factors are the correct answer.

layer 3 is younger than layer 6.