ANSWER:
According to the constitution, a former Secretary of State who was born in Yugoslavia but is now a naturalized citizen could not be president of US.
Option (c)
EXPLANATION:
There are three criteria that must be satisfied to be eligible for becoming the 'President of the United States'. They are:
Since in option (c) the former Secretary was born in Yugoslavia, he/she does not satisfy the first criteria. The other two options satisfy all the three criteria.