Which of the following is not a use of por?

a. to refer to a length of time
b. to express gratitude
c. to indicate a destination
d. to show movement through, along, or around

¿qué te __ tus abuelos con el pastel de cumpleaños? sirve sirvo sirves sirven

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

These are the questions and answers select the best translation for the following term or phrase. what did i do? ¿qué hice? select the best translation for the following term or phrase. i take one piece of wood. tomo un trozo de madera. fill in the blank according to the story. en la mesa hay varios trozos de madera