Identify the one illogical comparison among the following examples.. a: the uniforms we saw last night are the best i've seen.. b: of all the sports teams at our high school, the boys soccer team has the oldest uniforms.. c: our purple and green striped uniforms are the most ugliest in the whole league.. d: of all the high school volleyball teams, the one from that high school always has the newest uniforms.

The one that has an illogical comparison among the following examples is: Our purple and green striped uniforms are the most ugliest in the whole league. This becomes illogical because of redundancy. The superlative form of the adjective "ugly" should only be ugliest without the word "most". Only use "most" for words that cannot be connected with the suffix -est. But if the word takes the suffix -est, the word "most" is no longer needed. Use either to form a superlative degree, but not both.

The correct answer is letter C. Our purple and green striped uniforms are the most ugliest in the whole league. The superlative form shouldn't be paired with another superlative form, just like the sentence in letter C. 
You can only use 'ugliest' instead of 'most ugliest' because the former is in superlative form already. The latter has two superlative words, most and ugliest.