Question

single moving water droplet. according to christopher oshman, a mechanical engineer at the colorado school of mines in golden, \the work is a step toward harvesting the energy of moving objects all around us, including ourselves, to power the electronic devices we use every day.\ so someday soon, you might be able to power these without a charger. reread the sentences from the passage. a drop of water sliding across a surface coated with two different materials would generate enough friction to create an electrical charge. so if metal wires are placed on that surface, and water droplets touch them as they move, harvesting electricity should be possible, ma reasoned... and it worked. in fact, mas researchers lit up 15 led light bulbs with a single moving water droplet. what this new method of forming water droplets phrase this new method of making metal wires this new method of generating electricity this new method of coating surfaces and worked.

Explanation:

The passage discusses generating electricity by using a water droplet moving across a coated surface with metal wires. The key action is harvesting electricity. Among the options, "this new method of generating electricity" aligns with the described process of creating electrical charge (as per the text: "generate enough friction to create an electrical charge" and "harvesting electricity should be possible").

Answer:

this new method of generating electricity