This is the 4601st most frequent Korean word.
감소를
"감소를" means "reduction" or "decrease."
In this sentence, "감소를" refers to a decrease or reduction specifically in industrial production, used as the object of the verb "막기" (to prevent).
산업 생산 감소를 막기 위해 새로운 정책이 필요합니다.
New policies are needed to prevent a decrease in industrial production.
Here, "감소를" signifies a reduction, targeted as the objective area within the action of aiming or having as a goal ("목표로 하고 있습니다").
온실가스 배출 감소를 목표로 하고 있습니다.
We aim for a reduction in greenhouse gas emissions.
In this context, "감소를" is used to denote a target, specifically the declining number of students analyzed in the study.