Hi all,

I've got a doubt in one question while solving from OG. I'm not asking question as it is from OG, so i guess it should not be restricted. The question was based on the concept i have learned from videos of RON:

According to the concept:

We use Verb+ing => 1. When it is personalized or there is someone specific mentioned to do the job. 2. The stress is given on the process/steps of the work and person/doer is not important.

Otherwise, when the verb is not personalized, we go for Verbals i.e. Noun form of the verb (Destroy(v), Destruction (verbal))

Considering the fact above i thought the first one is preferable than the later one:

1. A firm claims the ability of assessing Something (assessment is by firm that is specific)
2. A firm claims to be able to assess Something.

I know that there is an idiomatic issue here (claims to be able to assess is better than claims the ability of assessing, however i'm bit confused in the exact idiom also), but there should be some correlation between the rules mentioned above and the answer.

Please guide.

Regards,
Kapil Kapoor