Which option identifies the type of study described in the following scenario? A group of 50 men are being studied. Of those men, 25 have heart disease and 25 do not. The groups of men are as similar as possible in every other way: race, diet, socioeconomic status, marital status, etc. The researchers are trying to determine what caused the 25 men to develop heart disease when 25 other men did not. They ask the men a lot of questions about their life and experiences to try to determine what could have caused these differences. Prospective cohort study Randomized controlled trial Historical cohort study Case study

Prospective cohort study

Explanation:

A prospective cohort study is a longitudinal cohort study that follows over time a group of similar individuals (cohorts) who differ with respect to certain factors under study, to determine how these factors affect rates of a certain outcome.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation