The correct answer is "Admittedly, we cannot reuse or recycle all of the materials we use in our daily lives"
Explanation:
A counterclaim always states the opposite point of view of the main claim. Also, counterclaims are often used in speeches or texts to explain opposite points of view and reinforce the claim by disproving counterclaims.
This implies the counterclaim should attack or disprove recycling. According to this, the sentence in blue that introduces the counterclaim is "Admittedly, we cannot reuse or recycle all of the materials we use in our daily lives" because those who oppose recycling often claim not all materials can be recycled, and therefore this is a counterclaim or opposite point of view. Additionally, after the claim, the author disproves this by mentioning "We should reuse and recycle the materials that we can and try our best not to purchase materials and products that can’t be reused or recycled."
