In the studio era, an option contract allowed an actor to drop an "option" and choose to move to another studio after their contract expired

False

Explanation:

An option contract is signed between a film or show producer and the script author or the actor/actress involved in a film or show production.

An option contract with a script writer gives the producer the option to buy the rights to produce a film or show using the script.

An option contract with an actor/actress gives the producer the option to hire the actor/actress for a film or a series of shows, and for future films and shows involving subsequent seasons, e.g. movie sequels.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.