From its inception, an essential function of the OBD (on-board diagnostic) system was its use as a tool for emissions inspection and maintenance programs, often called:
A)emission tests"
B)SMOG tests"
C)I/M (inspection maintenance) tests
D)Federal Test Procedures (FTP)"

Question

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The Answer of From its inception, an essential function of the OBD (on-board diagnostic) system was its use as a tool for emissions inspection and maintenance programs, often called:
A)emission tests"
B)SMOG tests"
C)I/M (inspection maintenance) tests
D)Federal Test Procedures (FTP)"

From Its Inception, an Essential Function of the OBD (On-Board