The sentence: (c.) The children enjoy climbing on the playground equipment, is a sentence that uses the word climbing as a gerund. That is because climbing is directly appointed or connected to the playground equipment. A gerund is a word that is in the form of verb but acting as a noun.
They are called "the Camp David Accords". This is because they were held at Camp David, the country retreat of the president of the United States.
Before is the correct answer
