Olestra, a synthetic fat used to make potato chips
a. contains three fatty acid in each molecule
b. can cause people to gain weight
c. can be digested by humans
d. has no side effect

 a)Contains three fatty acid in each molecule

Explanation: Olestra is the component that is responsible for adding no fat to the food products.It is type of fat replacement which contains combination of sucrose's hexa, octa and hepta esters along with other fatty acids.

These type of chain fatty acid makes olestra , a harmful and unhealthy element for the body.It is found in products like potato chips ,doritos etc.

Other options are incorrect because it does not help in digestion of human easily,has lot of side effects like diarrhea , gastro-intestinal problems etc. It does not necessarily make humans fat rather produce side effects on the body.Thus, the correct option is option(a)