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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.

Respuesta :

Limosa

fAnswer:  A new source of high quality denim fabric

Explanation:

A shift from PPF1 to PPF2 would suggest a new improvement due to technology, innovation or raw material. Here a new source of high quality fabric would result in more and better production of fabrics.

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