There are many factors that encourage migration, among them are wealth,
education, religion, access to better job opportunities and better
healthcare and personal reasons (family).
Therefore the one factor that does not influence migration is listed in option c:
c. Healthcare and education are not pull factors that encourage migration.
Sand sheets and dunes cover approximately 25 percent of the Sahara's surface.
The capital city of Costa Rica is San Jose.
Happy Studying ^=^
The answer is - Unlithified or poorly lithified sediments.
Rocks can exhibit ductility only if there's ulithified or poorly lithified sediments. With other words, this process can occur only if the rocks that are bending over under the pressure if there's soft layer/layers that will allow this to happen without causing big opposing pressure and make the rocks break.
