Which do you think is a more basic characteristic for classifying organisms?
(a) The place where they live.
(b) The kind of cells they are made of. Why?

Explanation

### Step-by-Step Solution:

1. **Understanding the Options**:
- Option (a) refers to "the place where they live".
- Option (b) refers to "the kind of cells they are made of".

2. **Analyzing Option (a)**:
- The place where organisms live can vary widely and includes different types of environments such as land, water, etc.
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