Answer:
A: A new blood test makes it easier-and safer-to detect concussions.
Explanation:
The main idea of the passage is A new blood test makes it easier—and safer—to detect concussions.
Notice the phrases question the use of and proposed an alternative way. They suggest that the main idea involves a possible solution to a problem. Here, the main idea is that the problem of detecting concussions without radiation could be solved by a simple blood test.
C. because the nouns and time come together to make sense with the verb
I believe it would be the glossary located usually in the back of a book. I hope this helps!
Answer:
investigation
Explanation:
when analyzing something, you are performing a close inspection. When investigating something, you are closely analyzing details.