Gather Information and Assess Credibility Practice Test

Riley is writing about the Dust Bowl for a history assignment. She uses two sources:

Source 1: A 2015 textbook chapter published by a major educational publisher.

Source 2: A 1936 newspaper article written during the Dust Bowl.

Which is the BEST reason Source 2 can still be accurate and useful even though it is old?

Sofia is writing about the history of vaccines. She copies this from a website into her report without quotation marks:

Original from HistoryOfMedicineFacts.net (no author listed): “Edward Jenner observed that milkmaids who caught cowpox seemed protected from smallpox.”

Sofia’s sentence: Edward Jenner observed that milkmaids who caught cowpox seemed protected from smallpox.

What problem is shown in Sofia’s writing?