This question had choices:
A. nitrogen
B. hydrogen
C. water
D. ozone
Miller and urey model is inconsistent with the finding that earth's early atmosphere lacked D. OZONE.
The Miller and Urey experiment used water (H2O), methane (CH4), ammonia (NH3), and hydrogen (H2).
Given the choices, ozone is not part of the experiment. Ozone is a chemical compound with formula O3.