Final answer:
Practitioners may have difficulty identifying the theory they use due to the abundance and overlap of theories, as well as the need to integrate multiple theories for complex real-world problems.
Step-by-step explanation:
Oftentimes, practitioners may struggle to identify the specific theory they are using due to various reasons. One reason is that there are numerous theories and frameworks available in different fields, making it challenging to pinpoint a specific one. Additionally, some theories may overlap or share similar concepts, which can make it difficult to differentiate between them. Finally, the complex nature of real-world problems may require practitioners to integrate multiple theories or create their own framework tailored to the specific context.