Oil Pressure on 1991 Ford Ranger

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
What drives the oil pump? and what couldve possibly broke that wont spin the shaft to the oil pump anymore?
(1) Answer
The oil pump is driven by the auxillary pulley/shaft inside the timing cover. This pulley is driven by the timing belt.

A broken timing belt would mean a non functional oil pump, among other things. What is your symptom?