Crater Lake, the deepest lake in the United States, was caused by a huge volcanic eruption 7,700 years ago. Since human beings have lived around the mountain for more than 10,000 years, it is likely that people witnessed that eruption.

Determine whether the following arguments are best interpreted as being inductive or deductive. Also state the criteria you use in reaching your decision (i.e., the presence of indicator words, the nature of the inferential link between premises and conclusion, or the character or form of argumentation).