Answer:
C. All are examples of Benjamin Franklin's interest in improving people's daily lives.
Explanation:
The bifocal glasses, the efficient stove (or Franklin stove), the fire department, and Poor Richard's Almanack were all things that Benjamin Franklin created to help make people's lives better. Franklin is credited with being an inventor, a writer, a scientist, and a patriot.
Franklin is considered by many to be a polymath, which is a term given to people who knew about many subjects and worked in many fields. His most important contributions are drafting most of the Declaration of Independence and his research and experiments with electricity.