[stand] to reason

to state that something is logical or reasonable based on the available evidence or common sense

The idiom "stand to reason" has its origin in the logical and rational basis of an argument or conclusion. The phrase signifies that something is reasonable, logical, or expected based on the available evidence or common sense. It is primarily used to express agreement or acceptance of a proposition, emphasizing that the conclusion or expectation is logical and in accordance with reason.

It stands to reason that if you study diligently, you will perform well on the exam.
Considering her experience and expertise, it stands to reason that she would be chosen for the leadership role.
Given the rainy weather and the absence of an umbrella, it stands to reason that he would get wet.
It stands to reason that if you consistently exercise and maintain a healthy diet, you will improve your overall fitness.
With the high demand for tickets and limited availability, it stands to reason that the concert will sell out quickly.