Which is the best strategy for your community reduce noise pollution?

If this is the same question I'm thinking of which is multiple choice, the answer is to choose manual over motorized equipment for yard work.

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b