Which one of the following choices is not considered a political disruption to food distribution? a. war b. sanctions c. refugees d. drought

The correct answer is D. drought.
Droughts are considered to be natural disasters given that they occur when there isn't enough rain or moisture in the soil. Politicians cannot (yet) affect droughts, so that is the only option which is not considered to be a political disruption to food distribution, whereas wars, sanctions, and refugees are.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)