Adding heat will result in which of the following changes? Group of answer choices

Gas to liquid

Solid to liquid

Liquid to solid

Gas to solid

Why would a letter from the author support his argument better than an essay? o a. it can be less threatening to a reader and more personal. o b. it can let the author give lots of factual data to support his argument. o c. it can give the author a chance to make mistakes. o d. it can allow the audience to read it many times.