All of the following were responsibilities of the elected corporation commission except
a.
the regulation of schools
b.
the regulation of railroads
c.
the regulation of utilities
d.
the regulation of trusts

The correct answer is D) regulation of trusts.

All of the following were responsibilities of the elected corporation commission except the regulation of trusts.

We are talking about the Oklahoma Corporate Commission established in 1907 to regulate public service corporations important for the citizens.  Originally this Commission regulated transportation, railroads, telegraph and telephone companies. Later, it was allowed to keep records of state holders and officers of the corporations in the state of Oklahoma.