Which statement about the pyloric sphincter is true?

a. when the pyloric sphincter opens, partially digested food is pushed from the esophagus into the stomach.

b. when the pyloric sphincter opens, partially digested food is pushed from the stomach to the large intestine.

c. when the pyloric sphincter closes, partially digested food is prevented from entering the large intestine.

d. when the pyloric sphincter closes, partially digested food is prevented from entering the small intestine.

Applied Biology

Empirical evidence, data or knowledge is an obtained set of facts or figures or existing and presenting data that was yielded during the process of experimentation or scientific discovery. These empirical data or evidence is further studied and investigated by the scientist in a formal scientific approach which follows the steps of observation, making a hypothesis, gathering data, interpreting data and evaluating the data. These steps of the scientific approach are vital in the course to explain and discuss the result and evidence obtained during the process.