Step 1: Understanding the Question: 
The question asks which factor influences or is part of the process of identifying business opportunities. 
 Step 2: Analysis of Options: 
Let's examine each option. 
    
 (A) Volume of internal demand: This term is slightly ambiguous. If it means demand within the company, it's not relevant to external opportunities. If it means demand within the country (domestic demand), then it is a source of opportunity, but "Existing opportunities in the environment" is a broader and more accurate term. 
    
 (B) Created opportunity: An opportunity can be "created" through innovation. However, this describes a type of opportunity, not a factor that affects the *identification* process itself. One identifies the potential to create an opportunity. 
    
 (C) Existing opportunities in the environment: This is a core concept in entrepreneurship. Entrepreneurs scan the business environment (economic, social, technological, etc.) to identify existing gaps, unmet needs, or problems that can be turned into business opportunities. This is a direct factor that affects the identification process. 
 Step 3: Final Answer: 
The process of identifying business opportunities fundamentally involves searching for and recognizing existing possibilities within the broader business environment. Therefore, (C) is the most accurate and comprehensive answer.