Question

control modules have strategies to test at your request called....
a) on - site dtc
b) continuous memory dtc (cmdtc)
c) on - demand dtc
d) circuit checks

Explanation:

On-Demand DTC refers to diagnostic trouble codes that are generated when a technician manually initiates a test of vehicle control modules at their request, matching the description in the question. Other options do not fit: On-site DTC is not a standard term, Continuous Memory DTC stores codes from ongoing operation, and Circuit Checks are a type of test, not the named strategy for on-request testing.

Answer:

C) On-Demand DTC