Final answer:
In an analogy where 'biggest' corresponds to 'weirdest', the most appropriate analogous term for 'dim' is 'strangest', as both are superlative adjectives describing an extreme degree of a characteristic ('size' for biggest and 'oddity' for strangest).
Step-by-step explanation:
The question presented is an analogy question, which means you're being asked to find a word that has a similar relationship to dim as the word biggest has to weirdest. The word biggest is a superlative adjective describing the extreme size of something, while weirdest is a superlative adjective describing the extreme degree of strangeness. The analogous term for dim, which is a comparative adjective for lack of brightness, would be a word describing an extreme degree of oddity or anomaly in a similar superlative form. Therefore, the best fit from the provided options is strangest, which is the superlative form of strange, indicating the highest degree of oddity.