Step 1: Understanding the Concept:
This question tests the correct usage of different forms of a word (adjective, noun, etc.). The sentence requires an adjective to describe the state of the subject "you".
Step 2: Detailed Explanation:
Let's analyze the options:
(A) dissatisfactory: An adjective used to describe a thing or situation that is not good enough (e.g., "The result was dissatisfactory.").
(B) dissatisfying: An adjective (present participle) used to describe a thing or situation that causes dissatisfaction (e.g., "It was a dissatisfying meal.").
(C) dissatisfied: An adjective (past participle) used to describe a person's feeling of not being pleased or happy (e.g., "The customer was dissatisfied.").
(D) dissatisfaction: A noun representing the feeling of being dissatisfied (e.g., "He expressed his dissatisfaction.").
The sentence "you are " describes the feeling of the person ("you"). Therefore, the correct adjective is 'dissatisfied'.
Step 3: Final Answer:
The correct word to fill in the blank is 'dissatisfied'.