Question

research on the surviving rehearsal sheets of composer eliot marston shows that he occasionally marked alternate phrasing patterns beneath established melodic lines. these secondary markings were traced with graphite rather than ink. ___ surviving recordings from marston’s 1912 performances feature those very phrasing shifts, verifying that the graphite markings reflected actual interpretive decisions rather than abandoned drafts.

25
which choice completes the text with the most logical transition?
a indeed,
b yet,
c admittedly,
d to this end,

Explanation:

The first part of the text talks about Marston's alternate phrasing markings on rehearsal sheets. The second part says his 1912 recordings have those phrasing shifts, verifying the markings were interpretive decisions. "Indeed" is used to emphasize or confirm a related point, which fits here as the recordings confirm the markings' purpose. "Yet" is for contrast, "Admittedly" for conceding, and "To this end" for a purpose - none fit as well as "Indeed" to show the recordings support the earlier info about the markings.

Answer:

A. Indeed,