Final answer:
The keyboard layout named after the first six letters on the top-left alphabetic row is the QWERTY layout, making the answer a) QWERTY. It is the most widespread layout for English-language keyboards.
Step-by-step explanation:
The keyboard layout that gets its name from the first six letters in the top-left row of alphabetic keys on the keyboard is the QWERTY layout. Therefore, the correct answer is a) QWERTY. This layout is the most common English-language keyboard layout in use today. It was originally designed in the 19th century to reduce jamming on mechanical typewriters by separating commonly used letter pairings. Despite the development of alternative layouts such as AZERTY, Dvorak, and Colemak, which are designed for efficiency or ergonomic benefits, the QWERTY layout remains the predominant standard for English-language keyboards.