Which of These Pairs of Concepts Can Be Positively, as Well

question 71

Multiple Choice

Which of these pairs of concepts can be positively, as well as negatively, related?

• A)the income of consumers and the demand for a product
• B)the price of a product and the quantity of that product demanded
• C)the price of a product and the demand for a complementary product
• D)the cost of resources required to make a product and its supply

---

Definitions:

Pyroclastic Flow

A fast-moving current of hot gas and volcanic materials (such as ash) that flows down the sides of a volcano during an explosive eruption.

Hot

Having a high temperature, often used in the context of describing the thermal state of magma, lava flows, or the Earth's core.

Thick

Having a large distance between opposite sides or surfaces; not thin.

Vesicles

Small cavities in volcanic rocks created by the expansion of gas bubbles during solidification of the magma.