Which scenario represent a scientific investigation a. a measurement of growth patterns of crystals space b. a selection favorite songs in a survey c. a questionnaire on the quality of care in the hospital d. survey on the best opinions for reducing air pollution

The correct answer is A. A measurement of growth patterns of crystals space

Explanation:

A scientific investigation is a type of investigation that uses the scientific method (observation, question, creating a hypothesis, testing, analyzing information, share results) to formulate explanation about the world or a certain phenomenon. Because of this, the scientific investigation is mainly used to study phenomena of the natural world or any other phenomenon that can be testable and that is based on facts and reality rather than on perception or opinions. Considering this, the scenario that represents a scientific investigation is "A measurement of growth patterns of crystals space" because this focuses on a phenomenon of reality that can be testable, while others just focus on opinion or personal perspectives that cannot be tested.

c.muti cella's eukaryotic organisms began to diversify

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.