Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show:

Step-by-step solution

Nickel exhibits ferromagnetism due to a quantum physical effect called exchange coupling. If the temperature of a ferromagnetic material is raised above a certain value, called curie temperature, the coupling ceases to be effective. Most such material then becomes simply paramagnetic. Hence option (D) is the correct answer.