we went out with a small ship to have a bbq on the water . the russians did some fishing and got a lot of nice fish . then some of them went swimming - well , they jumped into the water , stayed there for a moment and then went out again . we wanted to do the same , and so Anica , Maude , Elias and i also took a bath in the very cold sea .

Based on the preceding passage, choose your answer for question Why did the speaker and their friends choose to try swimming in the freezing water ?
Options: i. None of the above choices .. ii. Not wanting to appear less tough than their Russian counterparts , they were trying to prove their grit. iii. They were unsure if the Russians like them or not and tried to gain favor by mimicking them. iv. They were enjoying the visit and wanted to emulate the local customs to see what they were all about.
The answer is:
iv.