Which of the following is a clue that the source man not be reliable and valid? a the author is a college poressor b the site was last updated within the past month the site expresses distrust in the government and the legal system c the site expresses distrust in the government and the legal system d the information comes from the library of congress

D the information comes from the library of Congress

C) the site expresses distrust in the government and the legal system

The first choice shows that the author is knowledgeable on the subject and can articulate and explain it. 

The second choice shows that the published work is current. Outdated work might not apply to the topic since it might have undergone changes and/or updates. 

The fourth choice shows that this published work has been reviewed and edited enough to be available in nation's oldest federal cultural institution. To have a published piece in the Library of Congress would be an honor!

Hope this helps!

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.