A survey of management schools shows that hands-on project work, training that is conducted using an established mentoring system, regular assessments fully prepare students for independent professional work.
A) shows that hands-on project work, training
that is conducted using an established mentoring system, regular assessments
B) shows that hands-on project work, training conducted using an established mentoring system
, and regular assessments
C) shows that hands-on project work, training
that is conducted using an established mentoring system, and regular assessments, which
D) show hands-on project work, training conducted using an established mentoring system, regular assessments
thatE) show that hands-on project work, training conducted using an established mentoring system and regular assessments
To maintain parallelism, training that or assessment that is incorrect so we can eliminate A C D
Between B and D the difference is of comma
Whenever you have list it is always advisable to put comma before AND to remove any ambiguity
Else the last two items in list can be mistaken to be one item
Hence B looks to be the best choice
--Added---
Oh I missed the show and shows in first go
It should be definitely B then