A fuse wire melts when a current`I_m` is passed through it. The value of `I_m` can be increased by:
[Assume that each change is made while keeping the other quantities fixed]

Options

A. Decreasing the resistivity of the wire
B. Decreasing the area of cross-section of the wire
C. Increasing the resistivity of the wire
D. Increasing the melting point of the wire

Explanation

To determine how the value of `I_m` (the maximum current that a fuse wire can carry before melting) can be increased, we need to analyze the relationship between current, voltage, and resistance in the context of Ohm's Law.

### Step-by-Step Solution:

1. **Understand the relationship between current, voltage, and resistance**:
According to Ohm's Law, the current `I` flowing through a conductor is given by the formula:
\[
I = \frac{V}{R}
...