A particle oscillates along the \( x \)-axis according to the law, \(\displaystyle x(t) = x_{0}\sin^{2}\!\left(\frac{t}{2}\right) \) where \( x_{0} = 1 \, \text{m} \). The kinetic energy \( (K) \) of the particle as a function of \( x \) is correctly represented by the graph.