Complete the spaceship captain's bizarre daily log by choosing the correct formal prepositional phrase for each gap.

The highly advanced alien species with which we just made contact unexpectedly offered us a platter of space-tacos. Meanwhile, the mysterious glowing orb for which we are now responsible has started humming an upbeat pop tune. I am beginning to suspect that the uncharted galaxy from which our ship just emerged is actually a giant cosmic amusement park.

The highly advanced alien species with which we just made contact unexpectedly offered us a platter of space-tacos.

The phrase is "make contact with someone/something." In a formal relative clause, the preposition "with" shifts to the front of "which."

Meanwhile, the mysterious glowing orb for which we are now responsible has started humming an upbeat pop tune.

The adjective "responsible" is followed by the preposition "for" (responsible for the orb).

I am beginning to suspect that the uncharted galaxy from which our ship just emerged is actually a giant cosmic amusement park.

The verb "emerge" pairs with the preposition "from" (emerge from the galaxy).