Refer to the Figure

question 8

Multiple Choice

Refer to the figure.
The bottom figure's findings best support the proximate-level hypothesis that

• A) crickets use the light and dark as environmental cues to entrain their circadian rhythm.
• B) crickets have an internal clock that maintains a regular cycle of calling in the absence of environmental cues.
• C) it is adaptive for male crickets to have a circadian rhythm in order to match female activity and increase chances of reproduction.
• D) the molecule juvenile hormone (J
• H) is responsible for regulating the cricket's circadian rhythm.

---

Definitions:

Work

The exertion of effort towards achieving a goal, which can include employment as well as other forms of productive activity.

Service-based Economy

An economy that is primarily focused on the provision of services rather than the production of goods.

Industrialized Nations

Countries that have highly developed industries and infrastructure, often characterized by a high standard of living.

Probable Stage

A phase or condition where something is likely to occur or is expected based on current evidence or trends.