According to Box 2

Multiple Choice

According to Box 2.3 in the text, claims of a replication or reproducibility crisis in social science have arisen because

A) insufficient information about the research procedures of many studies makes it impossible to replicate them.
B) many researchers refuse to share their data and materials with others.
C) attempted replications have failed to reproduce the main results of many social science experiments.
D) replications are seldom carried out.