The correct answer is 1. squirrels are at a lower trophic level than raccoons
In the question a food chain is given:
Plants producing nuts -- squirrels -- raccoons -- bears
In the above food chain nuts producing plants are producers, squirrels are primary consumer, raccoons are secondary consumer and bears are top consumers. The feeding relationship can be graphically represented in the form of a pyramid. In a pyramid the number of organisms is highest at the base and is number of organisms get reduced as we move towards the apex of the pyramid. In the given food chain, squirrels occupies lower level than the raccoons in the pyramid. Thus, the squirrels are more in number than raccoons.