I think it is enhancing our ways to do so. Because now we can video chat to see how we're doing, we have phones that can fit right in our pockets, we have texting which I consider a efficient way of communication.
If you need anything else, please comment below!
I beleive that it is (C). but when i did my resaerch it really didnt give me word for word so that my answer
Answer:
a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!
