A scientist wishes to support the findings of her previous study, that smoking leads to a higher chance of lung cancer. In this situation, by conducting a second study, the scientist is aiming to demonstrate ______.

A) control
B) replicability
C) falsifiability
D) manipulation of variables

By conducting a second study, the scientist is attempting to replicate her previous findings, which is a key aspect of the scientific process. This will increase the strength of the evidence supporting the link between smoking and lung cancer. Control refers to the ability to keep variables constant in an experiment, falsifiability is the ability to disprove a hypothesis, and manipulation of variables refers to changing independent variables to observe their effect on dependent variables. While these may also be important concepts in a scientific study, they are not directly related to the scientist's goal of supporting her previous findings.