Step 1: Understanding the context.
The term 'hassles' refers to minor stresses and frustrations that we encounter in our daily lives, such as deadlines, traffic, or small annoyances.
Step 2: Explanation of options.
- (A) Hassles: Correct. Hassles are everyday stressors and the term most appropriate for the given context.
- (B) Antibodies: Incorrect. Antibodies are proteins in the immune system that protect against pathogens.
- (C) Pathogens: Incorrect. Pathogens are microorganisms that cause disease, not stressors in daily life.
- (D) Antigens: Incorrect. Antigens are substances that trigger an immune response, not stressors.
Step 3: Conclusion.
Hassles are the most fitting term for the daily stressors described in the question.
Final Answer: Hassles.