Cual es la extensión del libro Don Juan Tenorio??

Conjugates the verb in parentheses to the correct form of imperative. no (your thinking) about that.

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

Can some one plz tell me what each question says u dont have to answer it just tell me in english what each question says! plz you. look at pic!