Utah is home to Pando, a colony of about 47,000 quaking aspen trees that all share a single root system. Pando is one of the largest single organisms by mass on Earth, but ecologists are worried that its growth is declining in part because of grazing by animals. The ecologists say that strong fences could prevent deer from eating young trees and help Pando start thriving again.

According to the text, why are ecologists worried about Pando?

A) It isn’t growing at the same rate it used to.

B) It isn’t producing young trees anymore.

C) It can’t grow into new areas because it is blocked by fences.

D) Its root system can’t support many new trees.

Ratified by more than 90 countries, the Nagoya Protocol is an international agreement ensuring that Indigenous communities are compensated when their agricultural resources and knowledge of wild plants and animals are utilized by agricultural corporations. However, the protocol has shortcomings. For example, it allows corporations to insist that their agreements with communities to conduct research on the commercial uses of the communities’ resources and knowledge remain confidential. Therefore, some Indigenous advocates express concern that the protocol may have the unintended effect of____.

Which option most logically completes the paragraph?

A) reducing the reward corporations can get from their domestic contracts.

B) limiting research on Indigenous resources by corporations that have signed treaties.

C) preventing independent observers from determining whether the agreements guarantee equitable compensation for Indigenous communities.

D) discouraging Indigenous communities from learning new methods for harvesting plants and animals from their corporate partners.

Former First Lady of the United States Eleanor Roosevelt and Indian activist and educator Hansa Mehta was instrumental in drafting the United Nations’ Universal Declaration of Human Rights, a document that____the basic freedoms to which all people are entitled.

Which alternative completes the content so that it conforms to the discussion of Standard English?

A) have outlines

B) outline

C) outlines

D) were outlines

The Lion Light system, developed by Kenyan inventor Richard Turere, consists of LED lights installed around the perimeter of livestock pastures. Powered wit____, the blinking LEDs keep lions away at night, thus protecting the livestock without risking harm to the endangered lions.

Which option completes the English tradition?

A) energy collected by solar panels during the day.

B) energy collected by, solar panels, during the day,

C) energy collected by solar panels during the day,

D) energy collected by solar panels during the day.

Archaeologist Sue Brunning explains why the seventh-century ship burial site at Sutton Hoo in England was likely the tomb of a king. First, the gold artifacts inside the ship suggest that the person buried with them was a wealthy and respected leader.__the massive effort required to bury the ship would likely only have been undertaken for a king.

Choose the correct option?

A) still,

B) Instead,

C) Second

D) Second,