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.
Answer:
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Explanation:
Hello. This question is incomplete. The full question is:
While some say winter will be six weeks longer thanks to the groundhog, no one really knows. One day it may be snowing, and the next it may be sunny and warm. Every day is different and, while we are able to see approaching hurricanes using radar, the weather will forever go to the beat of its own drum.
What is the main idea?
The coastal regions experience the most damage as a result of hurricanes.
Hurricanes are intensely powerful storms that are only growing more intense.
While we may know what's coming ahead of time, weather remains unpredictable.
Meteorologists can make predictions of hurricane movement, but the complex conditions make certainty impossible.
Answer:
While we may know what's coming ahead of time, weather remains unpredictable.
Explanation:
The sentence "the weather will forever go to the beat of its own drum" shows that the weather is completely unpredictable and will act according to its own wishes, even if we try to predict what it will do. This shows us that the weather is something beyond our control and that it is ready to surprise us, presenting a snowy day and another sunny day, without giving us the slightest warning.
