Select the most more appropriate option to fill in the blank.

The soldiers received a military ______ to inspect all their vehicles before travelling.

mandate

The most appropriate option to fill in the blank is mandate.

The word "mandate" means an official order or instruction. In this context, it is the most accurate word to describe the military order that the soldiers received to inspect all their vehicles before travelling. The order was not an allotment, an affectation, or a dominion. It was a mandate, which is a formal and official instruction that must be obeyed.

The other options are not as appropriate.

• Allotment means a share or portion of something that is given to someone. The order to inspect the vehicles was not an allotment. It was an order that applied to all the soldiers.
• Affectation means a false or exaggerated display of emotion or feeling. The order to inspect the vehicles was not an affectation. It was a genuine order that was issued for the safety of the soldiers.
• Dominion means a territory or region that is ruled by a sovereign power. The order to inspect the vehicles was not a dominion. It was an order that was issued by the military to its own soldiers.