The argument discusses the attribution of a choral work called Lacrimae to the composer Pescard. Initially, this attribution was regarded as tentative because it was based on a single treatise from the early 1500s that named Pescard as the composer. However, recently, several musical treatises from the late 1500s have been discovered, and they also name Pescard as the composer of Lacrimae.
Surprisingly, the argument states that these newly discovered treatises do not support the attribution of Lacrimae to Pescard. Now, let's consider the options provided and analyze each one to determine the logical completion of the argument:
Option (A) suggests that the treatise from the early 1500s misidentifies the composers of some of the musical works it considers. While this indicates a potential issue with the early treatise, it does not explain why the newly discovered treatises from the late 1500s do not support the attribution of Lacrimae to Pescard.
Option (B) proposes that the author of the treatise from the early 1500s had no strong evidence to support the identification of Pescard as the composer of Lacrimae. Although this could undermine the credibility of the early treatise, it does not directly address the lack of support in the newly discovered treatises.
Option (C) introduces the idea that there are works that can be conclusively attributed to Pescard, which were not even mentioned in the early treatise. While this highlights a potential inconsistency, it does not directly explain why the newly discovered treatises fail to support the attribution of Lacrimae to Pescard.
Option (D), however, provides a logical completion to the argument. It suggests that the later treatises probably had no source for their attribution other than the earlier treatise. In other words, the later treatises simply echoed the attribution made in the early treatise without independent verification or additional evidence. This explains why the newly discovered treatises from the late 1500s do not support the attribution of Lacrimae to Pescard.
Option (E) mentions the absence of treatises from the 1600s that identify Pescard as the composer of Lacrimae. While this absence might raise doubts about the attribution, it does not directly address the lack of support in the newly discovered treatises from the late 1500s.
Based on this analysis, we can conclude that option (D) is the most logical completion of the argument. It explains why the newly discovered treatises from the late 1500s do not support the attribution of Lacrimae to Pescard by suggesting that they simply relied on the earlier treatise without independent verification.