Final answer:
Carl shades a row in the multiplication table where the products all have even ones digits that repeat in a specific pattern.
Step-by-step explanation:
The row that Carl shades in the multiplication table has products with ones digits that repeat 0, 4, 8, 2, 6. To determine which row this is, we need to observe that the ones digit of a product is determined by the ones digits of the multiplier and multiplicand. When the ones digit of the multiplier is 0, 4, 8, 2, or 6 and the multiplicand is any even number, the product will have a ones digit that matches the pattern given. Therefore, Carl shades the row of the even numbers in the multiplication table.
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