Heavier elements require higher temperatures to fuse. After stars run out of hydrogen in their cores, they leave the main sequence, collapse, and eventually get hot enough to fuse the helium in their cores into carbon. As discussed in the previous chapter, the Sun will never get hot enough to fuse carbon. Which of these hypothetical situations would allow the temperature of the Sun's core to rise enough for carbon fusion to be possible?A. Add mass to the Sun.
B. Increase the radius of the Sun.
C. Convert all of the Sun's hydrogen into carbon.
D. Decrease the radius of the Sun.

A. Add mass to the Sun.

Explanation:

As heavier the elements need a high temperature to fuse at a higher the stats may run out of the hydrogen and they collapse leaving the main set of sequence stars and collapses and get hot enough to fuse the helium gas in their cores as carbon. In such a hypothetical situation the temperature of the sun core would rose up and also allow for the temperature of the score to rise enough with the carbon so as the fusion to take place. Thus the addition of the mass to the sun would be possible.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

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