The sun. lol. It is closer to Earth, therefore bigger to us, and not just a small point of light.
Answer:
![(a)\ F_{No} = [P_{No} - \frac{P_{area}}{2}]* A](https://tex.z-dn.net/?f=%28a%29%5C%20F_%7BNo%7D%20%3D%20%5BP_%7BNo%7D%20-%20%5Cfrac%7BP_%7Barea%7D%7D%7B2%7D%5D%2A%20A)

Explanation:
Given
---- Altitude of container in Denver
-- Surface Area of the container lid
--- Air pressure in Denver
--- Air pressure in New Orleans
<em>See comment for complete question</em>
Solving (a): The expression for 
Force is calculated as:

The force in New Orleans is:

Since the inside pressure is half the pressure at sea level, then:

Where
--- Standard Pressure
Recall that:

This gives:
![F_{No} = [P_{No} - \frac{P_{area}}{2}]* A](https://tex.z-dn.net/?f=F_%7BNo%7D%20%3D%20%5BP_%7BNo%7D%20-%20%5Cfrac%7BP_%7Barea%7D%7D%7B2%7D%5D%2A%20A)
Solving (b): The value of 
In (a), we have:
![F_{No} = [P_{No} - \frac{P_{area}}{2}]* A](https://tex.z-dn.net/?f=F_%7BNo%7D%20%3D%20%5BP_%7BNo%7D%20-%20%5Cfrac%7BP_%7Barea%7D%7D%7B2%7D%5D%2A%20A)
Where



So, we have:
![F_{No} = [100250 - \frac{101000}{2}] * 0.0155](https://tex.z-dn.net/?f=F_%7BNo%7D%20%3D%20%5B100250%20-%20%5Cfrac%7B101000%7D%7B2%7D%5D%20%2A%200.0155)
![F_{No} = [100250 - 50500] * 0.0155](https://tex.z-dn.net/?f=F_%7BNo%7D%20%3D%20%5B100250%20-%2050500%5D%20%2A%200.0155)


From the answers provided, I believe the possible answer would be the last option, silicon, oxygen, and one or more metals. Here's my reasoning: the most abundant mineral group found in the Earth's crust is the silicate group. The silicate materials contain both oxygen and silicon. Silicates are the most common minerals in the rock-formation process, and it has, in fact, been estimated that they make up 75 to 90 percent of the Earth's crust. From this piece of evidence, I can guess that the answer will possibly be D, silicon, oxygen, and one or more metals.
It should also be noted that the additional elements that combine with the silicon-oxygen tetrahedron are involved with the other elements commonly found in the Earth's crust and mantle. They are aluminum, calcium, iron, magnesium, potassium and sodium.