Marisol y luz van a empezar una clase de técnicas secas. ellas tienen lápices, pero necesitan algo para poner los dibujos. necesitan el i think it may be one of these: el carbón los pasteles los lápices los marcadores la tinta

Papel

Explanation:

The original sentence can be translated to:

"Marisol and Luz are going to start a class of dry techniques. They already have pencils, but they need something in what they can put the drawings on. They need "

We know that they have pencils and that they need something in where you can put drawings, the first answer that comes t mind is "paper" (because you need paper to draw in it), which in Spanish is "Papel", then the complete sentence is:

Marisol y Luz van a empezar una clase de técnicas secas. Ellas tienen lápices, pero necesitan algo para poner los dibujos. Necesitan el papel.