In Japan, it is both _________ and polite to remove your shoes before entering someone’s home or other indoor areas.unprecedentedcustomaryoverzealousimminent

The correct word to fill in the blank is "customary."

Explanation

In Japan, removing shoes before entering a home or certain indoor areas is a traditional practice that reflects respect and cleanliness. The other options do not fit the context:

• "unprecedented" refers to something that has never happened before, which is not applicable.
• "overzealous" means excessive enthusiasm, which does not relate to the cultural context.
• "imminent" means something that is about to happen, which also does not apply here.

Thus, the sentence reads: "In Japan, it is both customary and polite to remove your shoes before entering someone’s home or other indoor areas."