Answer:
case study research
Explanation:
Case study is mostly done in social sciences in which one person, group or event is target for in-depth study. In case study mostly real-life context is studying and researcher try to explore these real-life context with help of case study. Like in this example a 13-year old locked up and studied its ability of language is case study.
D a subcommittee holds public hearings on the bill.
Answer:
E. how the use of a product spreads throughout a population
Explanation:
Diffusion is the process by which a new idea or new product is accepted by the market. The rate of diffusion is the speed with which the new idea spreads from one consumer to the next.
This would help because...
<em>When trees take in the air they only use the carbon dioxide and not the oxogen whitch gives more air in our enviroment and keeps it fresh.</em>
<em>It will help ore soil grow, and produce more vegetation for Kabul.</em>
<em>I hope this helps:)</em>
Leadership is the correct answer for this :)