Which of the following might cause a shift from ppf1 to ppf2? i. a new source of high quality denim fabric. ii. a new lighter metal for constructing automobiles. iii. an influx of immigrants to all parts of the nation.

1. which of the following is not an example of an objective question? a. multiple choice. b. essay. c. true/false. d. matching 2. why is it important to recognize the key word in the essay question? a. it will provide the answer to the essay. b. it will show you a friend's answer. c. it will provide you time to look for the answer. d. it will guide you on which kind of answer is required.