Mark is trying to make a choice between asking helen or lorelei to a party this weekend. he's having a tough time deciding because both are equally appealing options. this is indicative of a(n) conflict.

This is indicative of an approach-approach conflict.
An approach-approach conflict occurs when an individual is presented with two or more options, all of which are equally appealing. In the case above, Mark is tempted to ask both Helen and Lorelei to a party, and he cannot seem to make a choice because both options are equally tempting.