Final answer:
Benjamin Franklin is credited with many inventions, including bifocals which greatly aided people with vision problems. He did not invent ink pens, weather vanes, or sewing machines.
Step-by-step explanation:
Benjamin Franklin, a polymath who lived from 1706 to 1790, contributed to various fields including invention, writing and diplomacy. Among his many creations, he is credited with inventing bifocals to aid both nearsighted and farsighted vision.
This impacted daily life by making it easier for people to see clearly regardless of distance, especially as they aged. Ink pens, weather vanes, and sewing machines were also significant inventions, but they cannot be directly attributed to Franklin. It's critical to note that Elias Howe invented the sewing machine, and the concept of weather vanes has been around long before Franklin. Although Franklin's role as a statesman and diplomat is noteworthy, here we focus on his inventions, with bifocals being the item that made daily life easier from the provided options.