1996 Ford Ranger with clutch issues?

It is a 96 ford ranger 2.3L 2wd with a 5 speed standard transmission. The issue is that the clutch will not disengage when depressing the pedal. My first thoughts were a bad slave cylinder or clutch master cylinder. However, I had a friend push the pedal while I watched the slave cylinder inside the bellhousing and it seems to be functioning properly. So, my question is, does that mean it is the pressure plate that is toast? That is all it could be… Right?

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