Respuesta :
The thing which the words, begin, emphasis, detect, and emphasis, mean in this sentence is D. Uncover.
What is a Connotation?
This refers to the use of word meanings and the thing that they imply in a sentence based on a particular context.
Hence, we can see that the original sentence about the optical and radio telescopes and how they help to uncover energy waves in the sky, shows that option D is correct.
Read more about connotative meanings here:
https://brainly.com/question/711021
#SPJ2