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.

The correct answer is: 3.Experimenters show a link between adult-onset diabetes and obesity.

Relationships between two observed variables can be causal or non-causal. When one of them has a direct influence on the other it is called a causal relationship. On the other hand variables can be related without direct influence one to another and those relationships are non-causal.

its been noted for the past decade or so that there is some (approximately 5% to 7%) shrinkage in the brains of people who have schizophrenia, most notably in the gray matter, which is an important part structures in the brain’s amygdala, hippocampus and parahippocampus, which are all involved in memory storage and retrieval memory storage and retrieval.

explanation:

ive read articles

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.