Which best describes the tone used in the sentence? the bike is rusted, but it has special meaning to me since both of my children grew up riding it.
a. happy
b. joyful

answer:

that is correct, but there is a fourth one, plasma.

explanation:

plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. but unlike ordinary gases, plasma is made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.