This is the 796th most frequent Japanese word.
確保
Ensuring or securing.
確保 is used to mean securing or ensuring the existence of something important, in this case, a safe passage.
安全な通路を確保する必要があります。
It is necessary to secure a safe passage.
確保 is employed here to express obtaining or guaranteeing the availability of something critical, specifically funds.
私たちは十分な資金を確保しました。
We have secured sufficient funds.
確保 indicates preparing or reserving an essential resource for future use or emergencies, namely food supplies in this context.