The correct answer is C. Accute. The correct spelling is acute.
Acute is an adjective that means sharp or severe. It can also mean having a sharp point or edge. For example, "The pain in my tooth was acute." or "The knife had an acute point."
Accustom is a verb that means to make someone used to something. For example, "I'm trying to get accustomed to the new schedule."
Accept is a verb that means to receive something willingly. For example, "I accept your apology."
Accuse is a verb that means to charge someone with a crime or offense. For example, "The police accused him of murder."