Detailed Instructions: You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
Problem:Paragraph: Because these isotopes decay more slowly, they can be used to date much older specimens.
 Question: Fred has an isotope that decays quickly. What is likely true about it? 
 Choices: A)it can be used to date older specimens 
B)it can't be used to date old specimens
Solution:
it can't be used to date old specimens