Dr. hadden wants to conduct a study that will allow him to make claims that apply to all college students. which of the following validities is he prioritizing?
the statistical validity of the study

the internal validity of the study

the construct validity of the study

the external validity of the study

the external validity of the study

Explanation:

External validity in rather layman's terms looks at the scope or how many items the conclusion of a study may apply to. In other words, External validity defines how broad the conclusion of a study is. From the question above, Dr Hadden's conclusion after his study will generally apply to all students of the college, this in essence shows that Dr. Hadden's conclusion prioritizes external validity.

External validity is a direct opposite of internal validity which deals with how well a study was conducted.

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

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail