Kinda blurry sorry 20 minutes left please and thanks

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box