Answer: a. Ricardo. The change is not a valid amendment to his will
Step-by-step explanation:
The state they are in does not recognize holographic wills. A holographic will is one that is handwritten by the testator (Scott) and is not signed in front of witnesses or notarized.
The first will by Scott was typed and signed in front of witnesses. It is therefore recognized by the state they are in. Scott makes the correction to the will with a pen (handwritten) and does not do so in the presence of witnesses so the correction makes it holographic.
This will not be recognized by the state and so the original will is the valid will and will see Ricardo recover the property.