Final answer:
The correct answer is a) rescinded.
Step-by-step explanation:
The correct answer is a) rescinded.
The word 'feckless' suggests that the tsar's decision to decree a general mobilization was irresponsible or lacking in effectiveness. The phrase 'no sooner had' indicates that shortly after making the decree, the tsar took it back. The word 'reissue' indicates that the tsar eventually issued the order again.
The word 'rescinded' means to revoke, cancel, or take back. In this case, it accurately describes the tsar's actions of repealing his order. The other options, 'b) reiterated,' 'c) endorsed,' and 'd) undermined,' do not accurately convey the tsar's specific actions in this context.