Simplify
- ${ } ^ { - } (-16 )$

question 45

Multiple Choice

Simplify.
- ${ } ^ { - } (-16 )$

• A) 16
• B) 0
• C) \({ } ^ { - }16\)
• D) \({ } ^ { - } 1\)

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Definitions:

Prospective Study

An observational study in which participants are followed over time to observe outcomes, such as the development of a disease.

Correlational Study

A research method that examines the relationship between two or more variables to determine if they move together in any way.

Ex Post Facto

A Latin term meaning "from after the fact," often used in legal contexts to describe laws that apply retroactively.

Observational

Pertains to a research method in which the investigator observes subjects without manipulating the study environment or the subjects themselves.