Which Method Is the BEST Way to Divide Participants into Groups

question 17

Multiple Choice

Which method is the BEST way to divide participants into groups for an experiment?

• A) dividing participants by hair color
• B) allowing participants to choose which group to join
• C) dividing participants by where their names fall on an alphabetic list
• D) flipping a coin for each participant

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Definitions:

Siphons

Structures in some aquatic organisms that facilitate the exchange of water or air, often used for feeding, breathing, or locomotion.

Polychaete

A member of the class Polychaeta, these are marine annelid worms characterized by their segmented bodies, many with paired, paddle-like appendages called parapodia for movement and breathing.

Oligochaete

A class of annelids comprising earthworms and related species, characterized by having few setae (bristles) per segment.

Bivalvia

Bivalvia is a class of marine and freshwater mollusks with bodies enclosed by a two-part hinged shell, including clams, oysters, mussels, and scallops.