A researcher has performed a prospective study on a disease. to which specific kind of epidemiological study is this referring? descriptive case control analytical prodromal experimental

The answer is "descriptive".

Descriptive epidemiology gives a method for arranging and breaking down these information so as to comprehend varieties in disease recurrence geologically and after some time, and how ailment (or well being) differs among individuals in light of a large group of individual attributes (individual, place, and time).