Scientists show that change (whether good or bad) leads to stress, and that the accumulation (from stress-related changes) can cause major illness.

Farther along the road, another contestant was trying to repair the tyre on his (new shiny) bicycle so that he could win the race.

Both the above paragraphs read perfectly well without the brackets, but I have put them in the most suitable places, if the object of the game is to show how to use brackets.

(show) is Wrong if it is only one scientist.

Scientist shows.

Scientists show.

(accumulation from) is wrong. Use “accumulation of”

(Farther) along the road, another contestant (was trying) to repair the tire on his (new shiny) bicycle (so that) he could win the race. (no error)

(Farther) is wong. User “Further”

It should state “farther down the road, a contestant was trying to repair the tire on his new shiny bicycle so that he could win the race .” I changed “another” to “a” because there is no mention of the first contestant.

Scientist show that change (whether good or bad) leads to stress, and that the accumulation from stress-related changes can cause major illness.

*I do not see why there needs to be parenthesis anywhere in the second sentence*

First: (show) should be shows

2nd: (new shiny) should be (shiny new)

There is no error is the use of the word farther.

The parenthesis (new shiny) either needs a comma, as in (new, shiny), or the words reversed, as in (shiny new). Many grammarians would prefer the second form over the first one.

(accumulation from) doesn’t fit

The second one has no mistakes. Father is correct- it is only used with distance, Further means “in addition to” when distance is not being discussed. ie…”{can you describe this further?)

Also “farther” and “further” is both accepted by the english grammar so don’t get caught by that little trap 😉