Answer:
4
Explanation:
Given
The attached number line
Required
Opposite of number at C
First, we need to determine the number at C
From the number line, we have that:

The opposite is represented as -C
Multiply both sides of
by -1



<em>Hence, the opposite is 4</em>
A primary resource is firsthand evidence about an event, object, person, or work of art.
We can complete the sentence as, "In the communication process, the sender is the person wanting to share information," as is further explained below.
<h3>Who is the sender?</h3>
- To communicate means to transfer information.
- For communication to happen, someone must want to share information with someone else.
- The person who wants to share is called the sender.
- The person who receives information is called the receiver.
- The information transfered is called message.
In conclusion, the sentence in the question can be completed with the word "sender" since this term is used to refer to someone who wants to share information.
Learn more about communication here:
brainly.com/question/13383200