Please answer this for me thank you so much!

Choose the correct definition for  un conocido.  a.  a comic strip      b.  an acquaintance      c.  a coincidence      d.  an avalanche 

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

Page 16 of 25 (1 point) choose the best spanish equivalent to the phrase. claudia and nicole maria to move