joannaecohen
MGMAT says that the idiom is plan to, but here they use plan on?
"Plan on doing X" is used to express those cases in which there are two choices - 1. to do X or 2. not to do X. "Plan on doing X" implies that the the first of these two choices are made.
"Plan to do X" is used to express those cases in which there are many options of which only one is selected.
I am planning to go to India: implies that there are many things I could have planned; out of those many plans, I am planning to go to India.
I am planning on going to India: implies there are just two choices: to go to India or not to go to India - I plan the former.
(Note: This difference in usage is applicable for "decide to" and decide on" as well.)
In option C, the meaning implied is that there are two plans -1. to present rose, 2.not to present rose.
Use of "to present" would imply that there are many plans: 1. to present a rose, 2. to present a teddy bear, 3. to present chocolates, etc.
"Plan on" is more applicable here because the statement is from the perspective of the rose vendors - they are concerned with that whether rose is presented or rose is not presented. They are not bothered whether instead of rose a teddy or a chocolate or something else presented.
I'm trying to understand the different parts of the statement from a logical/syntax standpoint. In (C) what role does "on presenting" play? Is it a verb along with "are"?