Answer :
After reading the description of the research, we can say that Olivia is likely using the following type of method:
Quantitative
What is quantitative research?
Quantitative research works with numerical data and relies on statistics, computation, and mathematics to come to results. Its purpose is to quantify the problem under study.
Here, it is Olivia's purpose to quantify time spent by men and women on leisure activities. That is why she asks them to answer a survey and record the time in minutes. Later, Olivia will compute that information.
With the information above in mind, we can say Olivia is using a quantitative method for her research.
Learn more about quantitative research here:
https://brainly.com/question/24492737