To solve this problem, we need to understand the relationship between the pressure inside a soap bubble and its radius.$\\$The pressure difference $\Delta P$ between the inside and outside of a soap bubble is given by:$\\ \Delta P = \frac{4T}{R} \\$where $T$ is the surface tension of the soap solution, and $R$ is the radius of the bubble.$\\$As the soap bubble expands, its radius $R$ increases.$\\$Since the pressure difference $\Delta P$ is inversely proportional to the radius $R, \\$an increase in $R$ will result in a decrease in $\Delta P. \\$Therefore, as the soap bubble expands, the pressure inside the bubble decreases.$\\$This corresponds to Option 1: Decreases.