Which sentence from the introduction (paragraphs 1-5) offers an explanation for the researchers' findings?
(A) Scientists have worried that ancient redwood trees might also be at risk as
the planet heats up.
(B) But new research shows global warming may actually be helping, at least for
now
(C)
It may be that the trees prefer warmer temperatures, or that they are
benefiting from more sunlight or a longer growing season
"We're not seeing any evidence of declining growth rates," said Steve Sillett,
a forestry professor and nationally known U. S. redwoods expert
(D)

b i think or maybe d

explanation:

this would be in the imperative mood. it is a category of verb forms that are used to express orders,instructions,commands or requests.

first of paragraph? and second of statment?

don't submit such stupid questions!

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.