researchers compare the body composition of cattle feeding on a grain diet with that of cattle feeding on a…

researchers compare the body composition of cattle feeding on a grain diet with that of cattle feeding on a grass diet. this method of gathering data is classified as\n○ a census.\n○ a sample survey.\n○ an experiment.\n○ an observational study.

researchers compare the body composition of cattle feeding on a grain diet with that of cattle feeding on a grass diet. this method of gathering data is classified as\n○ a census.\n○ a sample survey.\n○ an experiment.\n○ an observational study.

Answer

Brief Explanations:

In this case, researchers are comparing two groups (cattle on grain - diet and cattle on grass - diet) without interfering or manipulating the diet assignment. A census involves collecting data from every member of a population. A sample survey selects a subset of a population to gather data. An experiment involves deliberately manipulating variables. An observational study just observes and compares existing groups without intervention. Here, it's an observational study as researchers are simply observing the body composition of two naturally - formed groups.

Answer:

an observational study.