During the Reenactment of the Peary Arctic Expedition, a Dog

question 15

Multiple Choice

During the reenactment of the Peary Arctic expedition, a dog sled was loaded with 630 kg of supplies to carefully meet the needs of the entire trip. What is the consequence of adding 25 kg of extra supplies?

• A) No consequence
• B) It increases the efficiency of the pulling effort.
• C) It decreases the energy required of the humans to navigate the sled.
• D) It increases the energetic requirements of the dogs to pull the sled.

---

Definitions:

Random Assignment

The process of allocating individuals randomly to groups in an experimental study to ensure that each group is similar at the start of the study, reducing bias and increasing the validity of the results.

Positive Correlation

A connection between two variables wherein a rise in one leads to a rise in the other.

Experimental Group

In an experiment, the group that is exposed to an independent variable.

Participant Effect

The influence on research outcomes resulting from participants' awareness they are being studied, potentially altering their behavior.