Fill in the blanks with the most appropriate word.
Its freezing. My feet are _____ blocks of ice.

The correct option is D Like
Option C is the correct option as using ‘like’ in the sentence brings out the sense of comparison between ‘feet’ and ‘blocks of ice’. ‘Like’ as a preposition means ‘having the same characteristics or qualities as’. Here, it is completing the meaning of the sentence by bringing out the sense of similarity comparison between ‘feet’ and ‘blocks of ice’. Option A cannot be used as the sentence does not require a verb. Option B cannot be used as it would make the sentence incorrect. Option D cannot be used because the sentence has only one clause and so it does not need the conjunction 'as' to connect two clauses.