Formal rulemaking differs from informal rulemaking in: a. public notice is required for formal rulemaking not informal. b. a public comment period is needed for formal rulemaking but not informal. c. no modification period exists in formal rulemaking. d. none of the above

Option D is correct

Explanation:

Informal rule process doesn't require hearings to be conducted on proposed rules but public comment is required for crafting regulations in a manner that reflects the stake holders popular opinions.

A formal rule requires a hearing process to be conducted in other to deliberate on the proposed rules.