This question is being asked as an exercise after explaining the definition of Neighborhood of a point.

My deduction: At first go, it seems yes the statement is true. However, it says subset and not necessarily an interval. So, if I pick up any two elements randomly , then it will form a subset and it can happen that it doesn't contain any interval in which the point belongs. And hence, not every subset of a neighborhood of a point can be a neighborhood of the point.

Is my reasoning correct?