Look at the image and read the caption.

A bright horizontal line extending from a bright center. Star gases extend from the center as well.

In this artist’s illustration, a massive star comes to a spectacular end, its gases rebounding from the dense center and surging outward in bursts of light, heat, and motion.

Which excerpt from "Black Hole Beginnings" would this image best support in a multimedia presentation?

Before a star is a star, it is an enormous cloud of gases.
As the nuclei meld, a smidgen of their matter vaporizes into energy.
It pushes on the star's outer gases, which flow outward in giant surges of heat and light.
Tighter and tighter the material contracts, crunching in so fast and so hard that it is destroyed.

A medida que los núcleos se fusionan, una pizca de su materia se evapora en energía.

Explanation:

The answer is for anyone who speaks spanish.

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.