If z is a complex number of unit modulus and argument q, then `a r g((1+z)/(1+ bar z))` equal (1) `pi/2-theta` (2) `theta` (3) `pi-theta` (4) `-theta`

Explanation

To solve the problem, we need to find the argument of the expression \(\frac{1+z}{1+\bar{z}}\) where \(z\) is a complex number of unit modulus and argument \(q\).

### Step-by-Step Solution:

1. **Express \(z\) in terms of its modulus and argument**:
Since \(z\) is a complex number of unit modulus, we can express it as:
\[
z = e^{i\theta}
...