In a Case Study

question 88

Multiple Choice

In a case study,

• A) an individual participant is studied in depth.
• B) systematic observation is used to see if a link exists between variables.
• C) behavior is carefully observed without intervening directly with subjects.
• D) a variable is manipulated while another variable is observed for changes.

---

Definitions:

Carbon Dioxide

Carbon dioxide is a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.

Molecule

The smallest unit of a chemical substance that retains its chemical properties, consisting of two or more atoms bonded together.

Compound

A substance made up of two or more elements chemically combined in fixed proportions.

Sodium Chloride

A chemical compound known as table salt, composed of sodium and chlorine atoms, essential for human health but required in moderation.