Answer:
A solution to this roadblock in Tia's research is:
a. Narrow her research to focus on the economic effects of earning a college degree.
Explanation:
Notice that the problem is not the sources, but Tia's focus. Her research topic is too broad. The effects of earning a college degree are several. There can be financial, social, cultural, and personal effects, among others. If Tia adjusts the topic, narrowing it down to only one of those types of effects, she will be able to also narrow down her sources. That way, she will focus on what is truly necessary for her research. For that reason, the best option is letter A. narrow her research to focus on the economic effects of earning a college degree.
