Tysha Notices That Every Time She Wears Jewelry to Work

Multiple Choice

Tysha notices that every time she wears jewelry to work she has a very productive day and finishes all her projects on time.When she doesn't wear jewelry she struggles to get everything done.She concludes that wearing jewelry is the cause for her successful days at work and buys more jewelry.Is she correct?

A) Yes; she is using an experimental design to draw causal links.
B) Yes; she is using a correlation to draw causal conclusions.
C) No; she cannot make causal claims from correlations.
D) No; there is no relationship between the variables at all.