Question

Which sentence is punctuated correctly

Answer 1

However the average, world, temperature has continued to rise, significantly
However, the average, world temperature, has continued, to rise significantly
However the average world temperature has continued to rise significantly.
However, the average world temperature has continued to rise significantly

Answer 2

the last one

Answer 3

Any ideas?

Answer 4

@jessmitz
No direct answers please.

Answer 5

last one I believe

Answer 6

@fumt11415
No direct answers.

Answer 7

@fumt11415
Welcome to Open Study. http://openstudy.com/code-of-conduct

Answer 8

dktf