The correct answer is B. It becomes gradually weaker
Explanation:
A stimulus refers is an object, sound, situation, etc. that causes a reaction or response, in terms of behavior or reaction, for example, in the case presented the sound of the bell paired with the food causes the dog to salivate, which is reinforced if the stimulus is presented multiple times. However, if the stimulus that leads to the response disappears the response will also disappear over time; therefore, if the bell is presented without food (stimulus) the response will become gradually weaker and therefore the dog will stop salivating.
Answer:
al-Qaeda, U.S.
https://www.bbc.com/news/world-middle-east-14704951
be is the answer that applies to this exert. Hope this helps. :)
Which* & the answer is the northern hemisphere.
