Mark the odd one in each series.
areolar tissue, blood, neuron, tendon

Explanation

To solve the question of identifying the odd one out from the series: areolar tissue, blood, neuron, and tendon, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Tissues:**
- Areolar tissue: This is a type of connective tissue that supports and binds other tissues.
- Blood: This is a fluid connective tissue that plays a role in transportation and immune response.
- Neuron: This is a specialized cell that is part of the nervous system, responsible for transmitting signals.
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