The correct answer is the 3rd one.
Many people felt the sound didn't come out loud enough, so other inventors figured out ways to use electricity to make the sound louder.
<span>A basic assumption of economics is rational self-interest.
Answer: B</span>
<em>*Whispering*The school secretly has bond with The Russian Hacking Government Illuminati Lizards. & are getting richer & Ri-</em> FBI OPEN UP!!!
RIP
<span>Yes, I agree.
</span><span>It is important that ideas at work include practical ways to implement them because it's n</span>ot only about the ideas that come up into your mind but the most important aspect is to apply those ideas on the required things and thus execute them in a working professional way. You can get ideas by discussing several things related to your work or daily life and also listen to others too, that way you may get to know the views of other people which might help you a lot.