Final answer:
The homophone that best completes the sentence is 'too'.
Step-by-step explanation:
The homophone that best completes the sentence is c. too. In this context, the word 'too' means 'also' or 'in addition'. It is used to show that the speaker enjoys both fruit and vegetables. The other options, 'a. your', 'b. you're', and 'd. two', do not fit grammatically or logically in the given sentence.