Aluminum is an element. If there's nothing else in the foil
besides aluminum, then the foil is entirely an element.
I think the answer is number D…. I think
You would know that the variable is quantitative if it shows any number to express the quantity. For example, quantitative variables are 50°C, 5 atm, 2 moles, 100 L and so on. A variable is qualitative if it expresses a relative quantity but not expressing a number. Examples would be: few, too hot, several, or even describing the characteristics of a variable. Hence, when the variable is in grams, then that would be quantitative.
The lithosphere is the solid, outer part is the earth it includes the brittle upper portion of the mantle and the crust and the outermost layers of Earths structures
