Can you explain the answers of these questions through #1 - #6?

Name LEGAL ENVIRONMENT OF BUSINESS MIDTERM EXAMINATION - FALL , 2015 Instructions : Circle the correct answer . Be sure to answer all the questions and place your name on each page . 1 . An offer 2 ) once revoked is no longer valid b ) is not a contract C ) can never be revoked d ) both A & B 2 . The duty that a property owner owes to a trespasser is to 2 ) not want only and willfully injure him b ) not be careless* C ) warn him of danger d ) no duty is owed 3 . Joe gave an engagement ring to Mary then broke off the engagement . Which of the following is correct ?" a ) he will never be able to get the ring back b ) he can't get the ring back if it was a gift or a special occasion C ) he can always get the ring back B . if he didn't break the engagement , he will always get the ring back 4 . What is the Burden of Proof in a civil matter ? a ) a unanimous finding by a jury b ) having to convince at least 1/ 2 the jury you are right a preponderance of evidence 8 beyond a reasonable doubt 5 . The Statute of Frauds refers to a ) claims for misrepresentation b ) what contracts need to be in writing perjury charges es any criminal case involving fraud 6 . According to the cases read in the book , Pennsylvania law a ) holds a social host only responsible when serving liquor to a minor* b ) holds a social host responsible if he knows or has reason to know his guest is intoxicated and leaves in an intoxicated state C ) never holds a social host responsible d ) both A&B 1 / Page