**Concept: The question tests on basic Table Analysis (using percentage)**

**Solution:**

The number of Matches Produced in Oregon in 1980 = 17% of 1.2 B

Let the state producing an equivalent number produce x%. The number produced = x * 1.6 B

Therefore x * 1.6 = 17 * 1.2

x = 17 * (12/16) = 51 / 4 = 12.75% or approximately 13%

The state is IOWA.**Option E**