This question has a variety of flawed assumptions.
First, it should not have been set on Jupiter. We cannot see the surface of Jupiter. Mars, or some moon, would have been a much better setting.
Second, neither of the two answers proposed is credible.
Option A is Superdeterminism, which delivers a planned universe for -- no reason at all, but just due to some hidden conspiracy set at the start of everything. Superdeterminism is an effort to rename a Great Deceiver hypothesis, without a deceiver involved, just chance.
Option B is agency postulation, but without any motives identified for the agent. This is not how design or agency hypotheses are used, as JD's excellent answer points out. One must postulate the intentions and purposes of an agent, which are not part of B.
There are two much more credible options which are not excluded, other than by decree by the OP.
Option C, there are undetected aliens who sculpted the two mountains, appear to be interested in communication with humanity, and for some TBD reason chose to use the OP's dead relatives to do this communication.
Option D, there is some manipulative powerful entity or cabal focused on the OP, and controlling his/her/their experience of a supposedly real world (See The Truman Show, or The Matrix for examples), and either the cabal is revealing this, or someone else has broken the shell of deception. The OP's option B would make far more sense in this sort of option D context, where the deceiver is a deity.
There may be other options that I have not yet identified.
As to whether agent explanations are more satisfying -- your question preclude any other kinds of explanations. And so long as humans ask "why" about our world, they will pursue the infinite series leg of Munchausen's Trilemma. Abandoning that leg, is to abandon science and naturalism. And if agent explanations push us one more explanation down that infinite series, they will be superior to NO explanation.