In Q.5:7, Allah says, 'if ye are ill or on a journey ... and ye find no water, then perform ...'
wudū
al-ghusl
at-tayammum
qasr
Correct answer is C
In this ayah, Allah subhanahu wa ta'ala reminds His believing servants of His bounty by legislating this glorious religion and sending them this honorable Messenger sallAllahu aalyhi wa sallam. He also reminds them of the covenant and pledges that He took from them to follow the Messenger, support and aid him, implement his Law and convey it on his behalf, while accepting it themselves.
Allah subhanahu wa ta'ala said " And you remember Allah's favour upon you and his covenant with which he bound you when you said we hear and we obey"