A "stimulus" is basically an event that happens in the outside environment that triggers a response. So, when you touched the dog's ear, that's a stimulus. The twitch is a response! So, A is correct. But just to be sure, let's look at the rest.
Artificial selection (B) is basically breeding: when humans breed organisms in order to obtain desired traits, like breeding dog species--this is not what our example is talking about.
Natural selection (C) is a similar process. When an organism mutates, but it actually helps it survive, it is more likely than the others to survive long enough to have babies. These babies are likely to have the helpful mutation, and so are their babies, and theirs, until a good portion of them have the mutation. This is NOT the example above!
And D, reproduction--well, let's just say it would involve a female dog and lots of babies, but that's not related to our example, so that isn't right either. The answer is A: a response to a stimulus.
Answer: A
Answer:
Explanation:
During the 19th and early 20th centuries, Sighet was the capital of Máramaros County in the Kingdom of Hungary and was made up of a large Jewish community. This Jewish community did not truly believe that the German goal was to annihilate the Jews, so instead of running and finding a safe place they tried to continue living their lives as usual.
Usually the students just use some drugs to get high, just mentally high when you would want to do anything and be not scared about everything, now they have invented a drug that they can use to get their grades higher, yes a grade higher than before is possible because of this drug.
A claim which is not defensible is saying that: D. George W. Bush is not as talented as his father, George H. W. Bush.
<h3>What is a claim?</h3>
A claim simply refers to a statement that is used by a writer or speaker to prove, substantiate, defend and support an argument. Thus, it's an assertive statement that is expressed by a writer, so as to prove that an argument is either true or real.
In this scenario, an indefensible claim is saying that George W. Bush is not as talented as his father, George H. W. Bush because it is actually a proven statement of fact.
Read more on claims here: brainly.com/question/22676015
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