This problem is about position of numbers on the real numbers line.
As you can observe in the image, point P is at the left side of -1, which indicates P is less than -1.
Remember that, on the number line, the number placed at the right side is greater, for example, 1 is greater than zero, because it's on the right side of zero.
We use the same logic here, that's why P is less than -1.
Therefore, the right answer is P < -1, the last option.
