Final answer:
Obesity and sunbathing are lifestyle risk factors that can lead to chronic diseases, with obesity being a major risk factor for type 2 diabetes and cardiovascular diseases, while sunbathing increases the risk of skin cancer.
Step-by-step explanation:
Among the options provided, obesity and sunbathing are indicated as lifestyle risk factors by the student's information. These risk factors are known to be influenced by personal choices and behaviors. Obesity is a complex condition involving an excessive amount of body fat and is a major risk factor for a number of chronic diseases, including type 2 diabetes, cardiovascular diseases, and various cancers. It is influenced by diet, physical activity, and socioeconomic factors. Sunbathing, another lifestyle choice, can lead to an increased risk of skin cancer due to excessive exposure to ultraviolet (UV) radiation. On the other hand, overcrowded housing and industrial-based occupation are more associated with environmental and socioeconomic factors rather than personal lifestyle choices.