Sea levels were much higher in the past. The climate on Earth has changed over time. Total numbers of organisms on Earth have changed over time. The total amount of radiation from the Sun was much higher in the past.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Scientists found evidence of past glacial activity in Massachusetts. Which of the following conclusions is best supported by this evidence?
Possibilities:
- Sea levels were much higher in the past.
- The climate on Earth has changed over time.
- Total numbers of organisms on Earth have changed over time.
- The total amount of radiation from the Sun was much higher in the past.

The climate on Earth has changed over time.