What can occur if a will is poorly drafted and lacks an effective residuary clause?

A will that is poorly drafted and lacks an effective residuary clause can indeed lead to certain property not being properly addressed in the distribution process. A residuary clause is essential because it dictates how any remaining assets not specifically mentioned in the will should be distributed. Without this clause, any assets that are not explicitly given away or which do not fit within the other provisions of the will may not have a clear destination upon the testator's death. This can result in some property going unallocated, effectively "falling through the cracks" and potentially leading to intestacy rules applying, where the state determines how this property is distributed.

The other choices do not accurately capture the consequences of a poorly drafted will. A lacks clarity on property distribution can lead to unintended outcomes, such as confusion and disputes among heirs or assets going to the state if they are not distributed per the law. This highlights the fundamental importance of clear legal drafting and comprehensive planning in creating a will.