The `pK_(a1) and pK_(a2)` of an amino acid are 2.3 and 9.7 respectively. The isoelectric point of the amino acid is:

Explanation

To find the isoelectric point (pI) of the amino acid given its pK_a1 and pK_a2 values, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Isoelectric Point (pI)**:
The isoelectric point is the pH at which the net charge of the amino acid is zero. At this point, the amino acid exists predominantly in its zwitterionic form.

2. **Identify the Given Values**:
...