Answer: there are 210 different color-trim schemes available.
Explanation:
To find the number of different color-trim schemes available, we need to multiply the number of choices for exterior color by the number of choices for interior color by the number of choices for trim.
Using the multiplication principle, we have:
Number of color-trim schemes = 7 * 5 * 6 = 210
Therefore, there are 210 different color-trim schemes available.