Question

volcano puts on a show
earth and space science studies: earths systems and interactions.
its constantly hissing and belching. but every half hour or so, yasur volcano sends up a huge spray of lava and makes a loud boom. in the dark, the explosions look like fireworks. the lava glitters as it falls from the sky.
the volcano on the pacific archipelago of vanuatu is fairly easy to get to. some have nicknamed it the worlds friendliest volcano. but sometimes, it has dangerous eruptions of lava and gas. they dont seem too friendly.
yasur volcano has become a popular tourist attraction. the volcano is located on vanuatus tanna island. the can be an adventure.
photo credit and all related images: abnick perry
yasur volcano erupts about every half hour.
question 1
based on the article, which fits best in the empty box above?
a. yasur volcano has become a popular tourist attraction.
b. theres a local legend about the origin of one volcano.
c. it can be dangerous to stand near the crater rim.
d. its about a 90 - minute hike to yasurs crater rim.
effect
sometimes, yasur is closed

Explanation:

The effect given is that Yasur is sometimes closed. We need to find the cause from the options. Option C states that standing near the crater rim can be dangerous; this would logically lead to the volcano being closed at times to protect visitors. The other options do not connect to the closure: A is an effect of its unique activity, B is unrelated legend information, and D describes access time, not a reason for closure.

Answer:

C. It can be dangerous to stand near the crater rim.