For design purpose, the pressure distribution at the base of a footing carrying axial load is considered as : 

Explanation:

For the purpose of the design of footings, the pressure distribution at the base of a footing carrying an axial load is typically considered to be uniform. This means that the pressure is evenly distributed across the entire base of the footing. The distribution of soil pressure under a footing is a function of the type of soil, the relative rigidity of the soil, the footing, and the depth of foundation at the level of contact between the footing and soil.

The pressure distribution at the base of a footing carrying an axial load is considered to be uniform. Hence option (1) is correct.