To calculate the total magnification of the animal cell, you need to multiply the magnification of the eyepiece lens (10×) by the magnification of the objective lens (40×):
Total Magnification = Eyepiece Magnification × Objective Magnification
Total Magnification = 10× × 40×
Now, calculate the total magnification:
Total Magnification = 10 × 40 = 400×
So, the total magnification of the animal cell is 400×, which corresponds to option C: ×400.