I read up something on participles and it has cleared(some part) of my tenses understanding.
Present Participle ( eg. seeing,knowing )
Role- To show an action occurring at the same time as the verb.
<Working> on the fundamentals,the team slowly <began> to improve.
The action <began> happened in the past, at the same time the working happened.
So this justifies the ans D ( which I too didnt get).
A is not parallel, "and" changes the meaning slightly
B ( my org ans) is wrong because, it does not show the relation between origin and perpetuate. Both happened in the past, but only the use of the present participle tells us that both happened at the same time.
Dialects orginiate bcoz of .........
Dialects perpetuate bcoz of.........
Both happened at the same time. This is taken care of by the present participle.
Now that the question is taken care of, I'll continue with my exposition on participles. I'm explaining it so that I can understand it better myself and those people who don't know will probably benefit.
Past Participle and Present Perfect Participle
Role- To show an action that has occurred earlier than that of the verb.
Past Participle eg :
<Prepared> by last year's experience, the coach <knows> not to expect too much.
Here the action expressed by <knows> is in the present. <Prepared> happened earlier in time ( as compared to <knows>)
Present Perfect Participle eg:
<Having experimented> with several game plans, the coaching staff <devised> a master strategy.
Here <Having experimented> took place before at a time before the past tense verb <devised>.
Now , I hope we can use these concepts in SC
I think they are a bit complex, but can be ingrained in our minds with practice.
go for the kill !!!!!!!
I'm crossing the bridge.........