Final answer:
Option B) 'Many spiders also eat bugs that destroy crops on farms' best supports the argument by highlighting the ecological benefits of spiders, which are not insects and are vital for controlling pest populations in agriculture.
Step-by-step explanation:
The best sentence to support the argument would be option B) Many spiders also eat bugs that destroy crops on farms. This fact directly relates to the beneficial role of spiders in an ecosystem, particularly in agriculture. It shows that spiders are not only different from insects because they have eight legs and do not have antennae or wings, but they also serve an important function by controlling pest populations, which can positively impact crop yields.
Moreover, since spiders are mostly carnivorous and their diet includes pre-digested bodies of insects and other small animals, stating the benefit they provide to farms by eating bugs helps underscore their utility beyond their physiological differences from insects.