A. Insolvencies are unlikely.
First, the question assumes that those dying own life insurance. That isn't a given.
In the U.S., sales of individual life-insurance policies fell 40% from the 1980s until flattening in recent years, according to research firm Limra.
Many Americans rely on life insurance provided by their employers. Many of those dying from the coronavirus are 70 or older, so they wouldn't likely be covered by these policies.
What is more, U.S. life insurers' bottom lines are protected at least somewhat in that they have lines of business that benefit when people die prematurely. Many are big sellers of annuities and have blocks of long-term-care policies on their books. If deaths rise, insurers would get out from under obligations on these contracts.
Having said the above, there is no question that life insurers face hard times if Treasury bond yields stay at this ultralow level. Insurers invest customers' premiums heavily in corporate bonds, which are priced in relationship to Treasury bonds.