Please answer me my tutur,

thank you,

It is a solidarity that exists among the creditors

It refers to the stage of the contract life where the parties have performed their respective obligations and contract is terminated.

In an obligation to deliver a determinate thing, what degree of diligence shall be exercised by the obligor or debtor in the preservation of the thing?

The parties may not stipulate that the payment may be made in currency other than the Philippine legal tender at the time of payment true or false?

Human internal organs are valid objects of a contract of saleas long as there is just payment for such true or false?

A preparatory contract is one which serves as a means by which other contracts may be entered into true or false?

Condonation or remission, being a gratuitous gesture by the creditor, does not require the debtor's consent true or false?