For me it looks like B coz of parallelism
all one has to do with cattle is:
1) to leave them alone to feed themselves,
2) to corral them, and
3) to drive them to market when the time is ripe
It follows the preposition+ verb+pronoun followed by phrases that support the parallel construction in each parallel items where needed (italics).
I agree. You do not need another to for it be parallel. After the first, the rest are optional. I thought so, at least.
A is not parallel
C is awkward: ... and ... and ...
I would have picked B at the Gmat