Which quotation from Paragraph 4 is a claim made by the author?

"In fact, the sound of the wind usually masks the noise."
"Torque is a force that produces rotation."
"However, according to the Wind Energy Development Programmatic Environmental Impact Statement prepared by the U. S. Department of the Interior Bureau of Land Management (BLM), design changes have reduce the noise turbines make."
"With the newer, more efficient models, wind is converted into rotational torque and less acoustic noise."

(Paragraph 4)There is some concern about the noise that is generated by wind turbines. However, according to the Wind Energy Development Programmatic Environmental Impact Statement prepared by the U. S. Department of the Interior Bureau of Land Management (BLM), design changes have reduced the noise turbines make. In fact, the sound of the wind usually masks the noise. With the newer, more efficient models, wind is converted into rotational torque and less acoustic noise. Torque is a force that produces rotation. The noise also decreases when towers are positioned properly and are insulated well. Additionally, since wind turbines are located primarily in rural areas or at sea, it is unlikely that noise pollution will be a major issue.