True true true true
https://quizlet.com/79013904/604-social-studies-exam-flash-cards/
Answer: b) Retrospective measures
Explanation:
Retrospective measures is the approach in which past information and study is used for collecting samples and starting research about same topic.This helps in easy conduction of research with less amount of time.
According to question, anxiety related information in competition of sport team can be known through retrospective measure as it will provide the past data of anxiety states occurring in sports competition.
Other options are incorrect because prospective measure, physiological approach and brain waves are not used for knowing information through past studies.Thus, the correct option is option(b)
Opinion leader are people within a reference group who, because of special skills, knowledge, personality, or other characteristics, exert influence on others.
<u>Explanation:</u>
An opinion leader is a well-known person or company that can affect a common view on the topic focus. They are the promoter/recommender of their particular recesses. They have a giving vitality and regularly accord their expertise with the participants on social media.
Because opinion leaders can endorse a company's commodity or plan, marketers usually attempt out opinion leaders for collaborations, progression operations, or commodity permissions. They understand the media reports and set them into circumstances for the broader community.
Answer it is an example or oral tradition because it can be passed down from generation to generation by word of mouth.
Explanation: