Question

boykin invented more than 25 devices! his most famous invention improved a heart - helping device called the pacemaker. if a heart does not beat normally, a pacemaker sends a charge. this small amount of electricity fixes the heartbeat. this pacemaker is powered by batteries. the wires send electricity from the pacemaker to the heart. complete the chart. what does charge mean in this passage? word: charge; clue: small amount of electricity; meaning:?; options: how much something costs; to make something stronger; to deliver a message; how much energy something has

Explanation:

To determine the meaning of "charge" in the passage, we analyze the context. The clue is "small amount of electricity", and the pacemaker sends electricity (charge) to the heart. Among the options, "how much energy something has" relates to electricity (a form of energy), while the other options don't fit: "how much something costs" is about price, "to make something stronger" is unrelated, and "to deliver a message" is about communication, not electricity.

Answer:

how much energy something has