A Factor Other Than the Intended Treatment That May Change

question 72

Multiple Choice

A factor other than the intended treatment that may change the outcome variable is known as:

• A) covariation.
• B) an extraneous variable.
• C) internal validity.
• D) temporal precedence.

---

Definitions:

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby while removing waste products from the baby's blood.

Amniotic Sac

A fluid-filled sac within the uterus that surrounds and protects a developing fetus during pregnancy.

Zygote

The initial cell formed when a new organism is produced by the fusion of sperm and egg cells, representing the earliest developmental stage.

Pupa

A developmental stage of some insects, occurring after the larva stage and before adulthood, during which the organism undergoes significant transformation.