What is true of saturated fatty acid chains?

a. they are more healthy that unsaturated fats.
b. they contain only single covalent bonds.
c. they are only made in leaf cells of green plants.
d. they contain at least one double or triple bond.

The best option among all these is b option. They contain only single covalent bonds.

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.