The parties of the obligation are generally named:

• a creditor and an ownership

• an ownership and a debtor

• a lender and a borrower

• a debtor and a creditor

The essence of the obligation is that:

• the creditor may secure his receivables

• the creditor may demand that the debtor provides a performance

• the debtor may demand that the creditor provides a performance

• the creditor may transfer its receivables to other person

Which of these events may be a source of an obligation:

• only torts

• only contracts and torts

• only contracts

• inter alia unjustified enrichment

Freedom of contracts means that:

• contracts may be freely terminated by each party

• parties are free to choose from among nominate contracts

• contracts may be concluded by two or more parties

• parties to a contract may arrange the legal relationship as they deem

The expression "pacta sunt servanda" means that:

• agreements may be changed in case of necessity

• agreements may not be changed

• agreements may not be kept

• agreements must be kept

A tort is:

• an unjustified enrichment

• a civil wrong that causes a claimant to suffer loss or harm

• a breach of contract

• always a crime

The term "damage" covers:

• only financial losses

• every injury to goods protected by the law

• only injury to property

• only non-economic injury

Tortious liability is based:

• on violation of the generally applicable provision of law

• on violation of the provision of the contract

• on breach of applicable provision of law or provisions of contracts

• solely on a breach of criminal law

Under strict liability:

• there is no requirement to prove fault, negligence or intention

• there is requirement to determine whether someone acted intentionally

• there is always requirement to determine a breach of contract

• there is requirement to determine whether someone was negligent

One of the obligations of the seller is:

• payment the agreed rent

• transfer the ownership

• collection the thing

• payment the price