Answer:
The spider concept that each of the boys have is what explains the difference in what they think about the spider.
Explanation:
A concept can be defined as the understanding or the idea that individuals have about something or someone. As each individual has a personality and a way of understanding things differently from each other, the concepts of the same thing also change between one individual and another. An example of this can be seen in the question above, where the two boys have different concepts about the spider, making one of them find the spider repulsive, while the other finds it interesting.
