Answer:
a) secondary oil recovery.
Step-by-step explanation:
Secondary oil recovery is used when the pressure inside the well is to high, being not possible to do a primary oil recovery.
To do this method, high pressure is needed, like this case because it says that ''squirts strongly''.
On the other hand, tertiary oil recovery is used when another method is not possible. Hydraulic fracturing or fracking, it's develop with a horizontal drilling, which is not the case.