How are most adjectives changed into adverbs?

a. by moving their place in the sentence
b. by including an irregular verb
c. by adding –ly to the end of the word
d. by adding the suffix –d or –ed

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the statement that best explains why the tenth amendment reserves some rights and powers to states is that the framers believed in the principle of federalism. this principle says that some powers are in the hands of a centralized national government, while others are reserved for the governments of several states.