Which is most likely a casual relationship?

1.an experiment showed different causes for two patients lung cancer
2.one experiment showed that all cancers can be cured by a new drug.
3.experimenters show a link between adult-onset diabetes and obesity.
4.experimenters show statistical data on diabetes drugs.

Gregor mendel was the first scientist to use statistics to analyze scientific data before mandel's experiments, scientists believed that organisms acquired traits from their environment and pass them on to their offspring after mendel's discoveries were accepted scientists realized that traits passed to offspring were the result of genes being passed from parent to his parents this is an example of

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

Does anyone know what the schooling version of sos mean? example