Here is an explanation. Hope it helps
https://www.britannica.com/science/relief-landform
In general, the most materially advanced and developed countries are focused on extensive development of the secondary sector of their economy. Because secondary sector is made up of Construction and Manufacturing, which the advanced and developed countries would like to focus on.
Answer:Due to high moisture content or toxicity it is best to remove all except <u><em>plastics.</em></u>
Plastic is substance dwelling of a broad range of man-made or semi-synthetic organic bilobate that are malleable. Life of plastic is usually hundred or thousand of years and isn't usually affected by the high moisture or toxicity.
<u><em>Therefore the correct option in this case is (e)</em></u>
