Exercise 1: What TaskFlow's Submission Needs for Guideline 2.1(a) — Possible Solution
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Guideline 2.1(a) requires a submission to be genuinely complete and
fully functional for the reviewer, with no placeholder content or
inaccessible features standing in the way of actually verifying the
app works. TaskFlow requires a real, logged-in user account before any
task data is visible at all - which means a reviewer who cannot log in
has no real way to see or verify anything past the login screen.

To satisfy this guideline, the submission needs a real, working demo
account - a genuine username and password, provided directly to Apple
in the App Store Connect review notes, that a reviewer can actually use
to sign in and see the app's real, populated functionality. The demo
account itself needs to be a real, working account on whatever real
backend TaskFlow's own sync feature (Architecture & Data's own
capstone) actually depends on, not a fake placeholder credential that
doesn't genuinely authenticate.

Omitting this would genuinely block review, not just slow it down: a
reviewer arriving at TaskFlow's login screen with no way to actually
get past it has no real path to verifying any of the app's own core
functionality - the task list, the sync behavior, the notification
scheduling - all of which sits entirely behind that login wall.
Guideline 2.1(a) exists specifically to prevent exactly this scenario,
where a real app is submitted in a state the reviewer genuinely cannot
evaluate.

ANSWER: TaskFlow's submission needs a real, working demo account
provided directly in the App Store Connect review notes, since every
piece of the app's own real functionality sits behind a login the
reviewer otherwise has no way to get past - omitting it leaves the
reviewer unable to verify anything the app actually does, which is
exactly the kind of incomplete submission Guideline 2.1(a) is designed
to catch and reject.

WHY THIS WORKS AS AN ANSWER
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This applies the general guideline requirement to TaskFlow's own
specific, real login-gated structure established in Architecture &
Data's capstone, explaining concretely what "complete" means for this
particular app rather than restating the guideline abstractly.