The free exercise clause guarantees that the national government will not interfere with which of the following?

What type of taxes do states levy on energy industries in an attempt to mitigate the effects of extraction of the energy resources?

A. sales tax B. corporate tax C. severance tax D. value-added tax

A newer trend in research has been the publication of _____ journals, which are published entirely online and are free for public use.

A. Open access B. Managed access C. Reachable access D. Simple access