Obesity and adult onset diabetes share a causal relationship.
Answer: c. Experimenters show a link between adult-onset diabetes and obesity.
Explanation:
When one event causes another event, the events are said to have a causal relationship. Obesity is a strong cause of adult onset diabetes. Blood-sugar levels in people having this medical condition are very high.
In a causal relationship the events have a cause-effect relation. One event will be the cause and other will be the effect. Increase in rain and increase in water level of dams share a causal relationship. Here increased rain is the cause and water rise in dams is the effect.
