Processes Associated with Behaviour Change Can Be Grouped into Cognitive

Processes associated with behaviour change can be grouped into cognitive and behavioural strategies. Which of these statements best describes the process-by-stage interaction for physical activity?

A) There is insufficient evidence to support a process-by-stage interaction.
B) Cognitive processes tended to peak during the action stage and remain elevated in the maintenance stage.
C) Cognitive processes and behavioural processes rise in a linear fashion until the maintenance stage, when cognitive process decline.
D) Cognitive processes rise until precontemplation when behavioural processes start to dominate until the maintenance stage.