Please Help with Imperfecto-Spanish!

Sheila conducts an investigation to see how the amount of salt dissolved in water affects the density of the water whichstatement best describes the correct plan for her procedure? the density and the amount of water are controls, and the amount of salt and the type of salt are variablesthe amount of water and the amount of salt are controls, and the type of salt and the density are variablesthe type of salt and the amount of water are controls, and the amount of salt and the density are variablesthe type of salt and the density of water are controls, and the amount of salt and the amount of water are variableso

Complete a conversation between members of the spanish club by choosing the appropriate question for the answer below. hoy es martes. ? cuándo es tu cumplea? os? ? cómo te llamas? ? qué día es hoy? ? cuál es la fecha de hoy?

¿cuál no dice maría? soy más inteligente que juan. ėl es menos inteligente que yo. juan es el más inteligente. soy tan inteligente como él.