9.What are the electronic devices that convert electrical audio signals into sound waves, allowing us to hear music, speech, and other audio content? a) Speakers b) Headphones C) Microphones d) Amplifiers Bos birak

## Step 1<br />The question is asking for the electronic device that converts electrical audio signals into sound waves. This process is known as signal conversion.<br />## Step 2<br />Option a) Speakers, are devices that convert electrical signals into sound waves. They are designed to produce sound when an electrical signal is applied to them.<br />## Step 3<br />Option b) Headphones, are similar to speakers but are designed for personal use. They also convert electrical signals into sound waves, but they are not the primary devices for this conversion.<br />## Step 4<br />Option c) Microphones, do the opposite of what is asked in the question. They convert sound waves into electrical signals, not the other way around.<br />## Step 5<br />Option d) Amplifiers, are used to increase the strength of electrical signals, not to convert them into sound waves.