Well, photosynthesis is actually simple, 6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O So Carbon + water --> Glucose + Oxygen + Water
Therefore, a 10x eyepiece used with a 40X objective lens, will produce a magnification of 400X. The naked eye can now view the specimen at a magnification 400 times greater and so microscopic details are revealed. More on objective lenses here. Magnification is the ability to view an object as larger.
C. When you take a step, the ground pushes back on your foot with the same amount of force. If it pushed back with less, your foot would go through the floor; if it pushed back with more, it would actually push your foot off the ground. But they're in opposite directions; your foot pushes down, while the ground pushes up.
Hope this helps!
The answer is A, because some diseases are genetic, and Shannon could be at risk of an underlying disease.