This is the 3319th most frequent Japanese word.
扱う
"扱う" means "to handle, deal with, or manage."
In this sentence, 「扱う」 is used to mean 'to handle' or 'to deal with' something, applying it to a problem or situation that requires care.
彼はその問題を慎重に扱う必要があります。
He needs to handle that issue carefully.
Here, 「扱う」 is used to express 'to deal with' or 'to carry' as part of managing or selling items in a shop.
このショップでは幅広い商品のカテゴリを扱っています。
This shop deals with a wide range of product categories.
In this usage, 「扱う」 means 'to treat' or 'to interact with,' focusing on equality in interpersonal relationships.