The Living Organisms and their Surroundings

Which of the following are characteristics of living beings ?
(i) Respiration
(ii) Reproduction
(iii) Adaptation
(iv) Excretion
Choose the correct answer from the options below:
(a) (i), (ii) and (iv) only (b) (i) and (ii) only
(c) (ii) and (iv) only (d) (i), (ii), (iii) and (iv)