Step 1: Understanding the Concept:
This is a simple location-based question. We need to scan the passage to find where the author mentions plans for future work.
Step 2: Detailed Explanation:
Let's examine the paragraphs:
- Paragraph 1: Discusses the current work's topic. No mention of the future.
- Paragraph 2: The author discusses how the problem of dream formation connects to "more comprehensive problems of psychopathology which cannot be discussed here." The very next sentence is: "These larger issues will be elaborated upon in the future." This is a clear statement of intent for future work.
- Paragraph 3: Discusses the difficulties and methods of the current publication. No mention of the future.
Step 3: Final Answer:
The explicit mention of future work occurs in the second paragraph. Therefore, option (C) is the correct answer.