PDF Stands for ____ Document Format

question 7

Multiple Choice

PDF stands for ____ Document Format.

• A) Printable
• B) Program
• C) Portable
• D) PowerPoint

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Definitions:

Inert Substance

A material or substance that does not undergo chemical change within a specified context, often used as a control in experiments.

Placebo

A substance with no therapeutic effect, often used in clinical trials as a control to test the effectiveness of drugs.

Placebo Injection

A treatment using a substance that has no therapeutic effect, used as a control in testing new drugs.

Control Group

In experimental research, a group of subjects that does not receive the treatment or intervention being studied and is used as a benchmark to measure the effects of the treatment.