VIII) Mark the letter A, B, C, or D to choose the underlined part in each sentence that needs correcting. 1. The world economy would be improve by the discovery of a cheap and non-polluting car. A B C D 2. Remove chemicals outside of the house; use eco-friendly pesticides that won't A B C contaminated groundwater. D 3. In order to reduce our carbon footprint, we should replace the disposable items with the reuse. A B C D 4. The hydrogen technology was still not invent in the 19^th century. A B C D 5. Deforestation is a serious problem in South America where cattle farmers have accused of A B cutting down large areas of forest to make room for cattle ranches. C D