Baltes et al.'s research in gerontology is focused on plasticity. The research uses the term "plasticity" to describe people's capacity. Plasticity refers to the belief that capacity is not fixed but can be learned or improved with practice. Which core issue of human development does Baltes et al.'s research explore

Continuity-discontinuity controversy

Explanation:

Continuity holds the view that human growth or development is a continuous and gradual process where the person will work(build) upon existing acquired knowledge and skills.

Discontinuity holds the view that human growth or development is a discontinuous process, involving a different and separate stages in which new knowledge and behaviors emerge quickly.

An examples of Continuity: an adolescent becoming more skillful in thinking, talking, or acting in much the same way they get taller. While the example of Discontinuity is An adolescent thinking literally who then abruptly moves to thinking abstractly

i would say b probably

answer; i believe that the correct answer is (tabula rasa);