Read the sentence from Colony Collapse Disorder." Scientists rigorously studied a variety of possible causes.
ranging from genetically modified crops to climate change to cell
phone towers.
How does the use of the word rigorously affect the tone of the
excerpt?
o It creates an excited tone.
It creates a confident tone.
o It creates a determined tone.
It creates a self-assured tone.

It creates a determined tone.

Explanation:

Rigorously is an adverb that has a couple of meanings, the main one of which is in an extremely thorough and careful way. We can conclude that the scientists worked very hard as they were very determined to discover the cause of the phenomenon they were researching. That's why we can say that this word creates a determined tone.

i don't really know the circumstances. i personally think not due to it not being fair for all parties and how hated i'd become if i thought it was a good thing.

c is the answer because first she would blush to make the reader wonder why which they find out in the next line.