Anoun or pronoun that tells to whom, to what, for whom, or for what an action is done is called the .
a. intransitive
b. transitive
c. indirect object
d. direct object

The central idea of that paragraph is every week his community only got some electricity so kelvin decided to make a generator for his community to make the community’s lives better. so the central idea is he wanted to improve the lives of his community.