The process of adding hydrogen to an unsaturated fatty acid and creating a more solid fat is called

Hydrogenation

Explanation:

The process of adding hydrogen to an unsaturated fatty acid and creating a more solid fat is called: hydrogenation.  A class of compounds made from the essential fatty acids that regulate a wide range of diverse body functions such as blood pressure, blood clotting and blood cholesterol.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick