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What is the perimeter of a triangle with side lengths 4, 5, and 6?

  1. 10

  2. 15

  3. 17

  4. 25

The correct answer is: 17

The perimeter of a triangle can be found by adding up all of its side lengths. In this case, the perimeter of the triangle is 4 + 5 + 6 = 15. Option A (10) is incorrect because it does not take into account all of the side lengths. Option B (15) is close, but is actually the value of one of the side lengths (5) and does not include the other two sides. Option D (25) is too high of a number and does not accurately represent the perimeter of the triangle. Therefore, the correct and most accurate option is C (17).