GMATNinja KarishmaB egmatCould you please help validate my reasoning:
A) significantly compounding the effects of drug and alcohol abuse, which already are a cost to business of Main error: 'more than $100 billion a year' seems to refer to 'business' rather than 'cost'
Separately is this understanding correct:
- 'significantly compounding..' refers to the preceding clause 'use of crack..is growing..'
- 'which' refers to 'effects'(of drug and alcohol abuse)
C) significantly compounding the effects of drug and alcohol abuse, already with business costs of'business cost' changes the meaning. It is different from 'cost to business'. 'Business cost' means that something is a cost that the business normally incurs(similar to payroll, rent etc), whereas 'cost to business' means that something is hurting the business.
D) significant in compounding the effects of drug and alcohol abuse, and already costing business 'and' denotes a parallelism marker. So there are 2 options:
Structure #1:
- use of crack..is growing...
- significant in compounding...
- and already costing
This has the following issues:
1) The part after 'and' should also be a clause, but that is not the case
2) 'costing' should refer to growing use of crack and cocaine, but it is referring to 'use of crack'. Also as per original sentence it refers to 'effects of drug..' and not 'use of crack..'. Neither case is correct
3) 'significant in compounding' is an adjective phrase, and doesnt modify the previous clause
Structure #2:
- use of crack..is growing...
- significant in compounding...
- and already costing...
Here 'already costing' seems to refer to 'use of crack..is growing', whereas as per original sentence it refer to 'effects of drug..abuse'. Also significant in compounding is not correct.
E)significant in compounding the effects of drug and alcohol abuse, and already costs businessStructure is as:
- use of crack..is growing...
- significant in compounding the effects of drug and alcohol abuse,
- and already costs business
Here again it changes original meaning as 'cost' refer to 'use of crack..' and not 'effects of ..abuse'.