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4. Once he had perfected the battery, he began to think of ways to improve the lives of the people in his community. One day a week, the government electricity would turn on in the village. The villagers had electricity to power up devices and use their simple light bulb only four times a month. The rest of the month, they were in the dark. Kelvin decided to make a bigger battery. He made a generator to power the homes in the village. Now, they only have to turn on the generators to enjoy the benefits of electric power.

What central idea is presented in this paragraph? (5 points)

Group of answer choices

He made a generator to power the homes in the village.

He began to think of ways to improve the lives of the people in his community.

The villagers had electricity to power up devices and use their simple light bulb only four times a month.

Kelvin decided to make a bigger battery.