From the following options, select the one word that is correctly spelt in standard English.

Introduction / Context:
This spelling question tests the ability to recognise the correctly spelt form of an English word when several look similar but contain deliberate errors. Such questions are common in competitive examinations because accurate spelling is essential for formal writing, reading comprehension, and professional communication.

Given Data / Assumptions:

- The task is to choose the correctly spelt word from four options. - Options: karnages, halogram, demagogy, comands. - Only one option matches the accepted dictionary spelling of a real English word. - The other options are near miss spellings of familiar words.

Concept / Approach:
The key to solving this type of question is to identify which option corresponds to a known English word in its correct form. Here, karnages resembles the word carnage, halogram resembles hologram, and comands resembles commands. None of these are correct spellings. Demagogy is a correctly spelt noun meaning the practices or methods of a demagogue, that is, political activity that seeks support by appealing to prejudices rather than by using rational argument.

Step-by-Step Solution:
Step 1: Compare karnages with familiar vocabulary. The real word is carnage, so karnages is incorrect. Step 2: Look at halogram. The standard spelling for the scientific and technological term is hologram, with an o after h. Step 3: Examine comands. The correct English word is commands, with double m. Step 4: Consider demagogy, which is a recognised English noun referring to demagogic practices. Its spelling matches dictionary usage. Step 5: Conclude that demagogy is the only correctly spelt option.

Verification / Alternative check:
Imagine each word in a sentence or headline. Words like political demagogy or the demagogy of certain leaders are often seen in articles about politics. By contrast, karnages, halogram, and comands look unfamiliar and would normally be underlined as errors by a spell checker. This mental check strengthens the conclusion that demagogy is the correct spelling.

Why Other Options Are Wrong:
karnages replaces the initial c in carnage with k and adds an unnecessary plural ending. halogram omits the necessary o after h, breaking the correct form hologram. comands drops one m from commands, which is a common error when doubling consonants. None of these forms appear as standard entries in reliable dictionaries.

Common Pitfalls:
Candidates sometimes rely on how a word sounds rather than on visual familiarity built through reading. This can lead to accepting phonetic but incorrect spellings such as halogram. To improve, one should read widely from newspapers, books, and articles and pay attention to the spelling of more advanced vocabulary. Over time, the eye starts to recognise correct patterns automatically and spotting errors becomes easier.

Final Answer:
demagogy is the only correctly spelt word among the given options.