Çözüldü Sentence Completion - SAT Vocabulary

Although the valiant explorer tried for years to reach the South Pole, his ________ was never rewarded.

A) mendacity
B) tenacity
C) husky
D) predicament
E) sport

Correct Choice: B (tenacity)

Explanation in the Book:
"The complete unit of this sentence sets up a relationship of contrast, signaled by the word although. The correct word is tenacity, which means the ability to stick to something."

Acing the SAT 2006
https://en.ru1lib.org/book/773259/dd9322
Page 49 (57 in the pdf file)
Explanation on page 54 (62 in the pdf file)