What is the result when squaring the imaginary unit i?

The imaginary unit ( i ) is defined as the square root of -1, which means that ( i^2 ) represents the value obtained when you multiply ( i ) by itself. Mathematically, this can be expressed as:

[ i^2 = (-1) ]

Thus, when you square the imaginary unit ( i ), the result is -1. This is a fundamental property of imaginary numbers and is essential in complex number theory. Understanding this concept is crucial for solving problems involving complex numbers, as it provides insight into the behavior of these numbers in various mathematical contexts. The other options do not align with the definition of ( i ), making them incorrect in this context.