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.
B to inform readers about H. G. Wells’s writing
This purpose is to inform. The passage only contains factual information about H.G. Wells's writing. We don't know anything about his life. When the purpose is to entertain, the author uses more figurative language and other literary devices to make the writing more interesting. The purpose is not to persuade because the author does not make any opinion statements about H. G. Wells or his writing.
It is entitled 'The Long Valley" and has some of his best works such as The Murder, The Chrysanthemums and some of the Red Pony stories.
<span>Languages are said to be arbitrary because of how there is no necessary or natural relationship between the words of a given language and the concepts that they represent.</span>
