What is the reflexive verb for preocuparse

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

Hola, me llamo aniyah y hoy voy a la tienda y necesito recoger ensalada, leche, queso, mantequilla y pan. porque vamos a tener un banquete

Juan periodismo en la universidad hace dos años. a. estudiaron b. estudié c. estudiamos d. estudió