Theorists attempt to explain our personality by identifying our stable characteristics and ways of behaving.

Attempting to explain our personality by recognizing our ways of behaving stable characteristics are done by trait theorists.

To add, in psychology, trait theory (also called dispositional theory) is an approach to the study of human personality. Measurement of traits that can be defined by habitual patterns of thought, behavior and emotion are the primary interest of trait theorists.

the correct labels are as follows:

a: yellow river

b: himalayan mountains

c: north china plain

d: taklimakan desert