From the given alternative words, select the word which cannot be formed using the letters of the word LEGALIZATION.

Introduction / Context:
Again, this is a word formation problem based on a given source word. You must determine which of the candidate words cannot be obtained by rearranging some of the letters of LEGALIZATION. Such questions test not only familiarity with spelling but also the ability to track letter counts accurately and spot letters that are absent or insufficient in the base word.

Given Data / Assumptions:

• Source word: LEGALIZATION.
• Candidate words: ALERT, ALEGATION, GALLANT and NATAL.
• Each letter in LEGALIZATION is available only as many times as it appears there.
• No new letters may be introduced when forming a candidate word.
• Exactly one candidate cannot be formed under these rules.

Concept / Approach:
The solution relies on counting the frequency of each letter in the source word and comparing those counts with what is needed for each candidate. If a candidate word needs a letter that does not appear in LEGALIZATION, or needs more copies of a letter than the source contains, then that candidate cannot be formed. Sometimes it is enough to notice a single problematic letter to decide quickly without checking every letter in detail.

Step-by-Step Solution:
Write LEGALIZATION and list letters: L, E, G, A, L, I, Z, A, T, I, O, N. Count frequencies: L2, E1, G1, A2, I2, Z1, T1, O1, N1. Check ALERT: A,L,E,R,T. The source has A, L, E and T, but there is no R at all in LEGALIZATION, so ALERT cannot be formed. Check ALEGATION: A,L,E,G,A,T,I,O,N. All required letters appear in the source, and the counts match or are lower than the source counts, so ALEGATION can be formed. Check GALLANT: G,A,L,L,A,N,T. G1, A2, L2, N1 and T1 are all available in LEGALIZATION, so GALLANT is possible. Check NATAL: N,A,T,A,L. The base word has N1, A2, T1 and L2, so NATAL can also be formed.

Verification / Alternative check:
You can quickly verify by scanning LEGALIZATION for the presence of each distinct letter of every option. ALERT uniquely requires the letter R, which is absent from the source word, while the other options use only letters that appear in LEGALIZATION. Even before counting exact frequencies, the absence of R is enough to prove that ALERT is impossible to form, whereas the others are not disqualified on this ground. This confirms ALERT as the only invalid word.

Why Other Options Are Wrong:
Option B, ALEGATION, contains only letters A, L, E, G, T, I, O and N, all found in LEGALIZATION with adequate counts. Option C, GALLANT, uses G, A, L, N and T, which are also fully represented. Option D, NATAL, requires only N, A, T and L, all available. Option E, None of these, is incorrect because there is one clear candidate, ALERT, that violates the letter availability condition by demanding R, a letter that is not present in the source word.

Common Pitfalls:
Many students attempt to reorder the letters mentally without first checking whether problematic letters exist, which can lead to confusion. Another common issue is overlooking repeated letters, for example assuming that because A appears, there must be enough copies to support double or triple A words without actually counting. A methodical approach that starts with identifying any entirely absent letters and then verifying key frequencies will significantly reduce mistakes in these items.

Final Answer:
The word that cannot be formed from the letters of LEGALIZATION is ALERT.