Figure 11-23 in the Text Shows That All of the Sun's

Multiple Choice

Figure 11-23 in the text shows that all of the Sun's luminosity is generated within the inner 25% of the solar radius. What is true of the correlation of the other graphs in the figure with the luminosity graph?

A) Almost all of the Sun's mass is located within the inner 25% of the solar radius also.
B) The core has a temperature of 15.5 *10⁶ K, the temperature needed for hydrogen fusion, throughout this inner 25% of the solar radius.
C) The temperature actually peaks in the convection zone, driving the convection process.
D) The density is greatest within the inner 25% of the solar radius, causing the high pressure and temperature required for hydrogen fusion.