Final answer:
The correct socket type for a Pentium 4 processor is Socket 478, which was used for Pentium 4 and Celeron processors in the early 2000s.
Step-by-step explanation:
The correct socket type for a Pentium 4 processor is Socket 478. The Pentium 4 processors were primarily built to fit in the Socket 478 interface, which was developed by Intel to provide electrical and physical connections between the motherboard and the microprocessor. Socket 478 was used extensively for Pentium 4 and Celeron processors that support a wide range of bus speeds and were prevalent in the early 2000s.