Using election results to measure public opinion is a challenge because

Is christianity monothestic or polythesitic?

Jack owns a small home near a school. he doesn't have any children, and doesn't plan on having any in the future. jack is a writer and works out of his home. all of the noise from the playground during the day interrupts jack while he is trying to work. tina, a friend of jack's, also owns a small home. her home is in a quiet, little secluded neighborhood. she has a child that will be entering first grade in the fall and wishes she lived closer to a school. one day, jack asked tina if she would want to exchange homes. is this a possibility? a. yes, a trade of properties (exchange) is possible if the trade involves no financing and the properties are not mortgaged.b. yes, a trade of properties (exchange) is possible if the trade involves no financing.c. no, it is not a possibility. simply "trading" real estate is not recognized under california real estate law.d. none of the above

According to "the experts: does the patent system encourage innovation? " what is a key problem with companies pursuing patents specifically to hinder, or prevent, competition?