type the plural form of the word.\n\nvalley

Brief Explanations:

In English grammar, when a noun ends in a vowel followed by the letter "y" (such as -ay, -ey, -oy, -uy), the plural is formed by simply adding an "s" to the end of the word. Since "valley" ends in the vowel "e" followed by "y," the plural form is "valleys."

Answer:

valleys