The atmosphere of Mars, containing only traces of both oxygen, the gas essential for all living organisms, and
also of water vapors, vapors that play an essential role in absorbing the radiated heat, is not considered aptly suitable to host human life.
(A) also of water vapors, vapors that play an essential role in absorbing the radiated heat, is not considered aptly suitable to host
(B) of water vapors, vapors that play an essential role to absorb the radiated heat, is not considered suitable to host
(C) also water vapors, vapors that play an essential role by absorbing the radiated heat, is not considered aptly suitable for hosting
(D) of water vapors, vapors that play an essential role to absorb the radiated heat, is not considered aptly suitable for hosting
(E) water vapors, vapors that play an essential role in absorbing the radiated heat, is not considered suitable to host