What is the consequence of a pure obligation or a conditional obligation but resolutory in character? It is demandable at once, and necessarily the prescriptive period starts to run from the time the cause of action accrues. It is wrong to say that a cause of action accrues from the time the demand was made. If such be the case no action shall nrnenriho The debtor promises to pay if his son does not die of cancer within 1 year. State the status of the obligation whether it is valid or not, and if valid state whether the obligation is due and demandable? The condition is suspensive negative possible(mixed)condition. This is a valid obligation. It is due and demandable depending on what happened to the son