Answer: External research
Step-by-step explanation:
External research is referred to as or known as a research conducted when an individual does not have any prior knowledge or information about a commodity or product, which further leads the individual to seek data and information from the personal sources such as friends or family and also the public sources i.e. online forums or in other cases the marketer dominated source i.e. sales persons especially at times when an individual’s previous experience is known to be limited.