The campus safety committee has asked Professor Ibrahim to study bicycling on his campus. He trains two observers and has them observe at various points around campus. They record the number of cyclists and their safety. After completing the observational study, Professor Ibrahim sends a survey out to the entire campus about bicycle safety, and asks all bicyclists to respond. He finds a large difference between their reports of how safely they ride and what his observers found. What is a likely cause of this?

socially desirable responding

Explanation:

Socially desirable responding: The term "socially desirable responding" is also denoted as SRD, and is defined as the propensity of an individual to produce different positive self-descriptions. The status of the socially desirable responding lies in the specific clarification of encompassed psychological construct.

Socially desirable responding is considered as one of the types of response bias in which the candidates involved in a survey tend to respond in a way that is considered as favorable by others.

In the question above, the given statement's cause is socially desirable responding.

c

explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long  

representative sample

sociologists study the world, observe a predicament or interesting design, and set out to investigate it. they use investigation methods to design a study possibly a comprehensive, detailed and precise, by using experimental method for directing research and gathering data.

to study the characteristics of the whole population, sociologist prefers to obtain the sample which is the finite part of a demographic population whose characteristics are analyzed to obtain data from statistics.

when administering with population, it can be described as a set of respondents picked from a larger population for the goal of a survey. a population could be a group of objects, people, or articles from which samples are obtained for computation of the whole population which is the aim of the sociological study.