Question

analyzing details that support central ideas

which detail from the text best supports the idea that the invention of the chronometer had a significant effect on british and world culture?

\during what is sometimes called the long nineteenth century... the countries of western europe and america were transformed from agricultural societies into industrial powerhouses.\

\there are twenty-four hours in the day so, as the earth rotates, every hour the sun apparently moves across the sky one twenty-fourth of a complete circle of the globe...\

\it is made of brass and is around the size of a large pocket watch, with a normal clock dial showing roman numerals and a smaller dial at the bottom for the second hand.\

\the chronometer for the first time allowed absolutely accurate charting of the oceans, with all that implied for establishing safe and rapid shipping routes.\

Explanation:

Analyze the target central idea

The question asks for a detail that best supports the idea that the invention of the chronometer had a significant effect on British and world culture. We need to find a quote that connects the chronometer to broad cultural, historical, or global impacts.

Evaluate the first option

The first option, "During what is sometimes called the 'long' nineteenth century... the countries of western Europe and America were transformed from agricultural societies into industrial powerhouses," describes a general historical transformation but does not mention the chronometer or its direct role in this change.

Evaluate the second option

The second option, "There are twenty-four hours in the day so, as the Earth rotates, every hour the Sun apparently 'moves' across the sky one twenty-fourth of a complete circle of the globe...", explains the astronomical and physical basis of timekeeping and longitude, but does not describe the cultural or global impact of the invention itself.

Evaluate the third option

The third option, "It is made of brass and is around the size of a large pocket watch, with a normal clock dial showing roman numerals and a smaller dial at the bottom for the second hand," provides a physical description of the object. It does not address its cultural or global significance.

Evaluate the fourth option

The fourth option, "The chronometer for the first time allowed absolutely accurate charting of the oceans, with all that implied for establishing safe and rapid shipping routes," directly links the chronometer to a major global development: the accurate charting of oceans and the establishment of safe, rapid shipping routes. This has direct, profound implications for global trade, empire, and world culture, making it the best Supporting Details choice for the Central Idea Identification.

Answer:

• (A) "During what is sometimes called the 'long' nineteenth century . . . the countries of western Europe and America were transformed from agricultural societies into industrial powerhouses."
• (B) "There are twenty-four hours in the day so, as the Earth rotates, every hour the Sun apparently 'moves' across the sky one twenty-fourth of a complete circle of the globe . . ."
• (C) "It is made of brass and is around the size of a large pocket watch, with a normal clock dial showing roman numerals and a smaller dial at the bottom for the second hand."
• (D) "The chronometer for the first time allowed absolutely accurate charting of the oceans, with all that implied for establishing safe and rapid shipping routes." (Correct answer)