For the options C,D & E , there is a COMMA after 'and'. I am aware of syntax " comma+and" but not "and +comma';Does the latter syntax have any special indication ?
A. the comma is in the wrong place. "in using the set of objective ....." is a modifier for how the executives could decide on a theory so if we take out the modifier then it will look like this: , and can decide on a strategy. Comma + and needs a subject and verb but there is no subject.
B. "in deciding" is not preferable
C. "Deciding" is no parallel to examine
D. Correct. The modifier is separated off by commas and "decide" is parallel to "examine."
E. "(Independent) and, (Independent clause)" is not appropriate. There are two IC not joined in the right way. It is suppose to be ",and" not "and,"
Hope this helps