Pursuant to the case ofByrnevVan Tienhoeven,

Question 1 options:

1)

the parties can be assumed to have agreed to the use of the postal system as a means of communication as long as it is reasonable to use the postal system under the circumstances.

2)

silence can be an exception to the requirement to communicate acceptance of offer.

3)

revocation of an offer is effective provided it was sent before the offeror received the offeree's acceptance.

4)

revocation of an offer is effective provided it was received by the offeree prior to an acceptance by the offeree.