Question

review the fifth and sixth paragraphs.
what your nose knows
1 your sense of smell enriches your experience of the world around you. different scents can change your mood or transport you back to a distant memory. your ability to smell also plays a key role in your health. if your ability to smell declines, it can affect your physical well - being and everyday safety.
2 whether its freshly brewed coffee, pine trees in a forest, or smoke from a fire, the things we smell are actually the tiny molecules released by substances all around us. when we breathe in these molecules, they stimulate specialized sensory cells high inside the nose. each of these
how do the fifth and sixth paragraphs work together?
they present a popular theory and then explain its origins.
they discuss a phenomenon and then explore its possible causes.
they acknowledge a common belief and then explain why it is so popular.
they present a popular theory and then offer a less popular one.

Explanation:

First, analyze the two paragraphs (even though only two are shown here, assuming the fifth and sixth follow a similar pattern to the first two for the question's context). The first part (like the first paragraph shown) talks about the phenomenon of the sense of smell (enriching experience, affecting mood, health, etc.). The second part (like the second paragraph) explores the cause of how smell works (molecules, sensory cells). Now check the options:

• Option 1: No theory and origin explanation here.
• Option 2: The phenomenon (smell's role) is discussed, then possible causes (how smell works via molecules and cells) are explored. This matches.
• Option 3: No common belief or popularity explanation.
• Option 4: No two theories presented.

Answer:

B. They discuss a phenomenon and then explore its possible causes.