"La cresta más alta (más larga) y afilada en el primer molar mandibular deciduo es:"
	A: "Mesiolingual" (Note: This word is a dental term and does not have a direct translation. It refers to the part of a tooth closest to the center of the mouth and towards the tongue.)
	B: Distolingual
	C: Mesiobuccal.
	D: "Distobucal"
	
"Mesiolingual" (Note: This word is a dental term and does not have a direct translation. It refers to the part of a tooth closest to the center of the mouth and towards the tongue.)