Which headline would be an example of genetic engineering?

plz put in the true answer

a) mrs. o'hara gives birth to the fourth redhead.
b) mr. brown's pigs: best quality ham for the money.
c) gene added to liver improves clotting time.
d) bacteria make human insulin

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

What makes a dominant allele different from a recessive allele

Why are common names a problem for scientist?