Aresearcher is interested in examining students' understanding and recall of texts. she gives students a series of texts to read (either essays or stories matched on critical variables such as length and grade level and presented randomly) and trains assistants to score and count up the exact number of correct "idea units" (or unique phrases) students recall from each text. the researcher also interviews students after they have read each text to examine their thoughts on why each was easy or difficult to understand. the researcher records students' responses and trains assistants to examine students' answers for different themes.
the researcher's study would fit best into the category of:

a. a mixed-methods study.
b. a quasi-experimental study.
c. a qualitative study.
d. a quantitative study.

a. a mixed-methods study.

Explanation:

Mixed method analysis is defined as the method of research in which the focus is made on collecting the data and analyzing it and mixing the both quantitative and qualitative data for a single study or for the series of studies or the collective study.

Mixed methods study is the majorly used within health services research by the health researchers.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place