A

Understanding the Coefficient of Friction:
The coefficient of friction (μ) is defined as the ratio of the force of friction (F_f) between two bodies to the normal force (N) pressing them together. Mathematically, this is expressed as:
$$ ext{F}_f = ext{μ} imes ext{N}$$
Step 1: Analyzing the definition:
The value of the coefficient of friction can be more than unity (μ > 1) in some specific situations. This occurs in scenarios where the material surfaces are extremely rough or sticky, or when other forces (such as adhesion forces) are at play.
Step 2: Understanding limits:
Nonetheless, in typical scenarios involving dry surfaces, the coefficient of friction usually ranges between 0 and 1. This is due to the microscopic interactions between the surfaces and the limitations of how much friction can occur between two objects without movement.
Conclusion:
While it is possible for μ to exceed 1 under certain conditions, it is generally found to be unreasonable to expect the coefficient of friction to be consistently greater than unity in everyday circumstances. Hence, the statement stands true.