Greta selected a research topic, decided what she wanted to learn about the topic, reviewed the literature on the topic, and formulated a hypothesis. What must she do next in order to continue in her research?

The next step for Greta is to choose a research method.

Explanation:

Greta has taken the first steps toward the completion of her research. She has a topic, she knows what she wants to learn about it - the problem -, and she has reviewed the literature on it, which is, by the way, a great tool to choose a method. Now, she has to take into consideration what she wants and needs to achieve her goal. Maybe she needs quantitative, maybe qualitative data. Maybe both. Are statistics important? Does she need to conduct a primary research, or are the data already available in a previous source? From those consideration, she can choose the best method.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )

answer; heredity ;