Name the television brand that advertises itself with the slogan "The Vision of Sound".

Introduction / Context:
This question belongs to the area of marketing and advertising awareness. Many brands use memorable slogans to differentiate themselves in the minds of consumers. Recognising which brand used the line "The Vision of Sound" is a typical exam question that checks how much attention you pay to advertisements and brand taglines.

Given Data / Assumptions:

• The slogan "The Vision of Sound" is mentioned.
• The options are Samsung TVs, Thomson TVs, Sansui TVs and BPL TVs.
• Exactly one television brand used this specific slogan in its advertising.

Concept / Approach:
Sansui is an electronics brand that has marketed televisions and audio products with an emphasis on sound and picture quality. The slogan "The Vision of Sound" cleverly connects sight and hearing, reinforcing this positioning. While Samsung, Thomson and BPL also market televisions, general knowledge and marketing based exam questions consistently link this particular tagline with Sansui.

Step-by-Step Solution:
Step 1: Note that the slogan "The Vision of Sound" is designed to highlight both audio and visual quality in television sets. Step 2: In Indian advertising history, this tagline is strongly associated with Sansui TVs. Step 3: Samsung is a global electronics leader, but its main marketing lines are different and more widely known as separate campaigns. Step 4: Thomson and BPL have also produced televisions but are not typically linked with this specific phrase in standard GK sources. Step 5: Therefore, the correct answer among the options is Sansui TVs.

Verification / Alternative check:
Many exam preparation books list popular advertising slogans and their associated brands. These lists explicitly state that "The Vision of Sound" belongs to Sansui. Old print and television advertisements from Sansui also display this line as part of their brand identity, confirming the connection.

Why Other Options Are Wrong:

• Samsung TVs are wrong in this context because their major slogans focus on innovation and life, not on this specific phrasing.
• Thomson TVs are wrong because they are not commonly cited in exam material as using "The Vision of Sound".
• BPL TVs are wrong since their advertising has used other lines and they are not the ones credited with this famous slogan.

Common Pitfalls:
Some candidates may choose Samsung simply because it is the most globally famous brand in the list. Others may guess randomly among the less familiar names. But exam questions on advertising slogans usually depend on repeated exposure in preparation books, so it is safer to memorise that "The Vision of Sound" points specifically to Sansui.

Final Answer:
The slogan "The Vision of Sound" is associated with Sansui TVs.