Please explain me , define in simple way what means below terminologies , and what I need to know about those terminologies because I want to do my assignment by own

• situation analysis
• problem statement
• vision statement
• literature review
• audience analysis
• potential audiences
• priority audience (teenagers from the age 12)
• priority audience characteristics
• knowledge , attitudes and behaviors of priority audience ( unsafe sexual behaviour)
• facilitators and barriers
• Influencing audience information
• audience profiles
• choose health theory model for this topic between ((Extended Parallel Processing Model - EPPM , DOI , Health Belief Model , Planned Behavior/Theory of Reasoned Action , Social Learning/Cognitive Theory , Trans-theoretical Model , sources for this models - https://www.orau.gov/hsc/theorypicker/theories.html )