Where is the error in "*`The more greatly` a person's eating and `the less` the amount of daily exercise, `the fatter` and `the more` likely to develop heart disease the person is."*?

The options are:

 - The more greatly
 - the less
 - the fatter
 - the more

I believe the answer the more only. It should say and `more likely to develop....`

 
What do you think?