(1) In 1994, three explorers set out to investigate the caves of southern France. (2) When they came across a cave opening that were blocked by stones, the explorers removed the stones and entered it. (3) Inside, the explorers found hundreds of paintings done on the rock walls. (4) Little did they know, they were looking at one of the oldest art displays in the world. (5) Initially, the explorers assumed the paintings were not very old. (6) Scientists were later brought in to take samples of the rock inside the cave. (7) They used radiocarbon dating to guess the age of the paintings. (8) Based on the scientists findings, the paintings were estimated to be as old as 30,000 B. C.E.!
(9) Since its discovery, the Chauvet Cave has fascinated everyone from geologists to art historians. (10) What sets the Chauvet Cave apart from other caves is the fact that it is unusually well preserved. (11) Scientists believe that a landslide sealed the entrance to the cave around 25,000 years ago. (12) Because the cave had no exposure to air, water, or living things its paintings and drawings remained intact.
4
What change, if any, should be made in sentence 12?
A.
Remove the comma after the word air.
B.
Add a comma after the word things.
C.
Insert a hyphen between living things.
D.
Change the word its to it's.

The answer would be true.

A  song, most broadly, is a single (and often standalone) work of music that is typically intended to be sung by the human voice with  distinct and fixed pitches  and patterns using sound and silence and a variety of  forms  that often include the repetition of sections. the word "song" is widely used by people in the popular music industry to describe any musical composition, whether sung or played only by instruments. "written words created specifically for music or for which music is specifically created, are called  lyrics. if a pre-existing poem is set to composed music in classical music it is an  art song. songs that are sung on repeated pitches without distinct contours and patterns that rise and fall are called  chants. songs in a simple style that are learned informally are often referred to as  folk songs. songs that are composed for professional singers who sell their recordings or live shows to the  mass market  are called popular songs. these songs, which have broad appeal, are often composed by professional songwriters, composers and lyricists. art songs are composed by trained classical composers for concert or recital performances. songs are performed live and recorded on audio or video (or, in some cases, a song may be performed live and simultaneously recorded). songs may also appear in plays, musical theatre, stage shows of any form, and within operas.