Research advises that the ownership of a pet in childhood may be so beneficial it fosters the capacity of some children for establishing positive relationships with animals and, the result, is to create life-long animal lovers.
"So X that Y"
Ability to/Capability to
(A) it fosters the capacity of some children for establishing positive relationships with animals and, the result, is to create
That is missing.
So X that Y(B) that it fosters the ability of some children to establish positive relationships with animals and, as a result, to create
Ability to establish and to create- seems fine.
(C) that it fosters the capacity of some children to establish positive relationships with animals and, the result of this, they are able to create
2nd is IC and IC can not connect without comma with another IC.
Wrong.
(D) that it fosters the ability of some children to distinguish positive relationships with animals, and results in creating
2nd is DC and DC can not have comma before and.
Wrong.
(E) as to foster the ability of some children for establishing positive relationships with animals, resulting in being able to create
So X that Y = That is missing so
Wrong.