Performance and Discharge of Contracts in Indiana

Three of the these statements about interpreting contracts are true, and one is not. Which statement is false?

A handwritten insertion can be canceled out by typing over it

In an addendum to the purchase and sale contract, the seller agrees to paint the house before conveying the house to the buyer. The weather changes and the seller is unable to finish painting the house before closing. This is an example of___

Partial performance

Mary has a contract to buy her mother's house when her mother is finally ready to move to a senior living community. This way the house stays in the family. After her mother finds a suitable senior apartment and moves, Mary writes a check for the agreed-upon amount and her mother transfers the deed to Mary. What is happening in this scenario?

Performance

In contract law, partial performance occurs when a party

Does some, but not all, of what the party has agreed to do

Which if the following is a contract that exists based on an understanding or assumption, rather than specifically defined terms?

Implied contract

How does assignment differ from novation?

Assignment doesn't require agreement of all the parties