The passage given below is followed by four alternate summaries. Choose the option that best captures the essence of the passage.

Certain codes may, of course, be so widely distributed in a specific language community or culture, and be learned at so early an age, that they appear not to be constructed – the effect of an articulation between sign and referent – but to be ‘naturally’ given. Simple visual signs appear to have achieved a ‘near universality’ in this sense: though evidence remains that even apparently ‘natural’ visual codes are culture specific. However, this does not mean that no codes have intervened; rather, that the codes have been profoundly naturalized. The operation of naturalized codes reveals not the transparency and ‘naturalness’ of language but the depth, the habituation and the near-universality of the codes in use. They produce apparently ‘natural’ recognitions. This has the (ideological) effect of concealing the practices of coding which are present.

The correct option is:
"Language and visual signs are codes. However, some of the codes are so widespread that they not only seem naturally given but also hide the mechanism of coding behind the signs."

Step-by-Step Explanation:

1. Deconstructing the Source Passage:
The passage discusses how codes (such as language and visual signs) function in a culture or language community. It points out three key ideas:
• Ubiquity and Early Acquisition: Certain codes are so widely distributed and learned so early that they seem "naturally given" rather than constructed (i.e., we forget they are artificial associations between a sign and what it refers to).
• Naturalization vs. Transparency: Even simple visual signs that seem universal are culture-specific. Their apparent "naturalness" is not because the language is inherently transparent, but because the codes have been deeply naturalized and habituated through widespread use.
• The Ideological Effect: This process of naturalization creates an illusion of natural recognition, which has the ideological effect of concealing the active practices of coding that are actually taking place.

2. Analyzing why the Correct Option is the best summary:
• The correct option accurately identifies that both language and visual signs are systems of codes.
• It captures the core paradox presented in the text: because these codes are so widespread (highly distributed and habituated), they acquire a deceptive appearance of being "naturally given."
• Finally, it notes the critical consequence: this natural appearance successfully hides the underlying mechanism/practices of coding behind the signs.

3. Why the other options are incorrect:
• Option 2 states "Not all codes are natural but certain codes are naturalized...", whereas the passage implies that no codes are naturally given (they only "appear" so; even seemingly natural visual codes are culture-specific). It also inaccurately states that "Ideology aims to hide...", whereas the passage says the naturalization itself has the ideological effect of concealing coding.
• Option 3 claims that "All codes... have a natural origin", which directly contradicts the passage's argument that codes are constructed articulations rather than naturally given.
• Option 4 incorrectly asserts that naturalization is the "effect of ideology", whereas the passage explains that the ideological effect is a consequence (or result) of the naturalization process, not its cause.