How to add condition in between fields in Profile2 module in drupal 7?
Yes you can do this also option wise using field conditional state module.

Go through this field_conditional_state for details.

Trigger a state when applied to a control field:

    empty - Triggers when the control field is empty
    filled - Triggers when the control field is not empty
    checked - Triggers when the control field is checked
    unchecked - Triggers when the control field is not checked
    value - Triggers when the control field's value is equal to a given string
    !value - Triggers when the control field's value is NOT equal to a given string