Question

which of the following did benjamin franklin invent or develop?
lightning rod, mousetrap, and the fountain pen
electricity, postage stamps, and the printing press
bifocal eyeglasses, a clean - burning stove, and the u.s. postal system
swivel chair, carriage, and the u.s. treasury

Explanation:

• Analyze each option:
• First option: Mousetrap and fountain pen were not invented by Franklin.
• Second option: Electricity was not invented (it's a natural phenomenon), and the printing press was invented earlier (e.g., by Gutenberg).
• Third option: Franklin invented bifocal eyeglasses, developed the clean - burning stove (Franklin stove), and established the U.S. postal system.
• Fourth option: Swivel chair, carriage, and U.S. treasury are not inventions/developments of Franklin.

Answer:

C. bifocal eyeglasses, a clean - burning stove, and the U.S. postal system (assuming the options are labeled A, B, C, D with the third option being C)