Explanation

(d) A good absorber is a good emitter hence option (a) is wrong. Every body stops absorbing and emitting radiation at $0\ K$ hence option (b) is wrong
The energy of radiation emitted from a black body is not same for all wavelength hence (c) is wrong
Plank’s law relates the wavelength $(\lambda)$ and temperature $(T)$ according to the relation $E_{\lambda}d_{\lambda} = \frac{8\pi hc}{\lambda^{5}}\frac{1}{\lbrack e^{hc/kT} - 1\rbrack}d_{\lambda}$
Hence option (d) is correct