To simplify \(-\sqrt{60}\), we can start by breaking it down:
\[ \sqrt{60} = \sqrt{4 \times 15} = \sqrt{4} \cdot \sqrt{15} = 2\sqrt{15} \]
So,
\[ -\sqrt{60} = -2\sqrt{15} \]
Therefore, the simplified form of \(-\sqrt{60}\) is:
\(-2\sqrt{15}\).
Among the responses provided, the correct answer is:
\(\mathbf{-2\sqrt{15}}\) (which does not appear in the listed responses). However, if you meant to check if there was a representation for this, the closest in spirit to your instruction is \(2i15^{-\frac{1}{2}}\) (if interpreted in complex form).
If you need any further assistance, feel free to ask!