Answer:
a. He designs new highways
Step-by-step explanation:
FHA is an acronym for the Federal Housing Agency which was founded by President Franklin Delano Roosevelt and which was also an aspect of the National Housing Act of 1934. This agency was founded to provide insurance for mortgage and rented buildings that serve basically hospital and residential purposes.
They also facilitate the construction of properties that will be rented or mortgaged. Since Carlos' job oversees construction and landed properties, then he should also know how to design new highways.