Source 1: According to the Arbor Day Foundation, a beetle newly introduced to
the United States is destroying ash trees throughout the Northeast.
Source 2:
Doug Podmore, owner of Churchville Trees, says, "Ash trees can be
protected from the beetle by having chemicals injected into their
trunks. That way, owners do not have to have trees cut down."
Which option best combines the two sources into a single detail sentence?

Chemical treatments can save ash trees from being destroyed by a dangerous new pest.

Explanation:

The option that best combines the two sources into a single detail sentence is option C "Chemical treatments can save ash trees from being destroyed by a dangerous new pest".

Option A is wrong as the option didn't address the information given in the question. The information in option A wasn't provided in both sources.

Option B is wrong as the option didn't address the information given in the question as well. The information in option B wasn't provided in both sources as we were not informed I residents cut down their trees or not.

Option D is wrong as both sources weren't addressed.

the guest is my guess