An offer may be made to the world at large. Such an offer is a general offer. However, a contract is not done with the whole world but only with the person who comes forward and accepts the offer. The acceptance might be express or implied.
As per Anson, "An offer need not be made to an asertained person, but no contract can arise until it is accepted by an ascertained person".
Case of Carllil vs Cabolic Smoke Ball Company.
Creation of the contract - If the person performs the conditions of the offer. Thus, a person who finds a lost dog fulfills the condition of the prize money and thus a contract with the owner of the dog is created.
General Offer of Continuing Nature - Some offers such as finding a lost object close when it is accepted by the first person. However, some offers, such as in the Carllil case, it can be accepted by any number of persons until the closing date of offer or until it is retracted.
Q. Describe the law relating to communication of proposals, their acceptance and their revocation.
Section 2(a) of Indian Contract Act 1972 says that when a person signifies his willingness to do or to abstain from doing something to another, with a view to obtaining the assent of that another, he is said to make a proposal. Further, section 2(b) says that when the person to whom the proposal is made signifies his assent, the proposal is said to be accepted. The important point to note here is that the party making the proposal or the party accepting the proposal must "signify" their willingness or assent to the other party. Thus, a promise cannot come into existence unless the willingness or assent is communicated to the other party. Further, even the revocation, if any, must be communicated to the other party for it to take effect. Therefore, communication is the most critical aspect in the making of a contract.
Communication
Section 3