Which important indoor safety measure should be taken during a thunderstorm?

It is essential to stay away from windows during thunderstorms

Explanation:

The best measures to take indoor against thunder are always to stay away from windows and avoid any close contact with electrical equipment. Pets also should bring insides and secure loose objects since they may become dangerous while flying due to high winds. It is also essential to postpone all outdoor activities until the storms are over

However, the dangers of lightning are prevalent in outdoors than indoors; however, when it is even, it can strike even inside your home.

lol i would say c -porductivity