How can bottles that illuminate can help society and how can it solve it?

Instead, it involved nothing more than a piece of metal roofing, some sealant and a plastic bottle filled with water and a little bleach. With that invention, originally created by Alfredo Moser and students at the Massachusetts Institute of Technology, MyShelter Foundation's "Isang Litrong Liwanag" campaign—which translates to "a liter of light"— has lit up 28,000 homes in Manila, improving the lives of about 70,000 people that previously did not have energy.

Explanation:

it's lower nubia : ) good luck

the answer is prolly b