The correct options are
A Increase in national wealth.
B People became rich.
C People could afford healthcare.
Due to the efficient production of quality goods and thereby raising demands for English-made products, national income of the country increased. Because of this, it was able to revive itself from the French Wars of 1793-1815. People became rich and were able to afford healthcare, which kept diseases at bay.
Explotation of workers is a negative effect of the Industrial Revolution.