B is the answer to this question. This means that the lithium ions will provide one electron each. Then, the nitrogen ion will get three electrons. Chemical bonds may not often be discussed by people especially in normal conversations but it should be remembered that they are important. Without chemical bonds, it will be hard for molecules to stay together.
The different atoms should share and release electrons as needed so that things will work properly. Bonds usually form between atoms with different charges. Chemical bonds come with a lot of energy and may be considered complicated by a lot of people but they are still highly fascinating.