Answer:
Content analysis
Step-by-step explanation:
Content analysis is a method to research the presence of some specific aspects in a content. These specific aspects can be color, words, themes or shapes. Here, it has been said that the researcher studies adolescent attitudes about senior citizens by analyzing depictions of the elderly in the lyrics of popular music and the content of teen magazines. Hence, the research is analyzing the content of the magazine and the lyrics of popular music. Therefore, this is an example of content analysis.