Final answer:
The beneficiary designation that reads, "Jane, my wife, only if she survives me by 30 days," is an example of a Survivorship Clause.
Step-by-step explanation:
The beneficiary designation that reads, "Jane, my wife, only if she survives me by 30 days," is an example of a Survivorship Clause. This type of clause specifies that the beneficiary must survive the person making the designation by a certain period of time in order to receive the benefits. In this case, Jane would only be entitled to the benefits if she outlives the person making the designation by 30 days.