Answer B3

And the solution is Greenwood Village behind Jane (one of the shops) (highlight to reveal)

Google Bonhoeffer's quote on obedience, and you will easily get:
"One act of obedience is better than one hundred sermons."
This is the message you were supposed to receive.

But you got NCZSQYMZAQHECNCQNBTVLLYJFQWPRKWQTVUITJLBSVWPBX
So, the coding method is quite obviously Cipher.

Now we come to the difficult part. In cipher cryptography, there is a plaintext (the original information), a ciphertext (the text after encryption), and the "key" (the encoding algorithm).

In this case, we have Bonhoeffer's orginal quote which is the plaintext, the jumbled letters which is the ciphertext, what we need to figure out is the "key".

From o -> n, key is y (25 spaces away)
n -> c, key is o (15 spaces away)
e -> z, key is u (21 spaces away)
a -> s, key is r (18 spaces away)
c -> q, key is n (14 spaces away)
... ... ...
The key you derive is "yournextlocationisatgreenwoodvillagebehindjane"

Fun? Sidenote: one of the simplest and most common cipher encryption method is the Caesar's cipher. What it means is that the key is uniform throughout. Try it!