Final answer:
The maximum movement of the valve head of 0.004 inch as shown by the dial indicator indicates the valve guide clearance is actually 0.004 inch. This measurement represents the total lateral movement. Therefore , the correct answer options is c)
Step-by-step explanation:
The question at hand involves a technician using a dial indicator to measure valve-to-guide clearance in an engine. From the measurement given, where the valve head shows a maximum movement of 0.004 inch from side to side, we can infer the total play or clearance.
The correct answer is that the clearance is 0.004 inch, as this is the total amount the valve can move within the guide. It's not doubled because we are measuring total lateral movement, not one-sided clearance.