For the process to occur under adiabatic conditions, the correct condition is:
(i)
(ii)
(iii) q = 0
(iv) w = 0
Adiabatic process is processes that take place without any transfer of heat between the system and surrounding. i.e, in adiabatic process q = 0
Thus answer is (iii) q = 0
[Option (i) is an isothermal process. In the isothermal process, the temperature of the system remains constant.
Option (ii) is for isobaric process; where pressure of system is kept constant.]