Which keeps you current?

Three landings keep you current to carry passengers (61.57), and you did those last week. But next month your private is more than 24 months old, so you're due for a flight review (61.56). Completing a phase of WINGS counts as one. Option B.

That's it. Your private is 24 months old, so by next month you're due for a flight review (61.56). Completing a phase of WINGS counts as one (61.56(e)).

Good thinking. Time with a CFI working on a new endorsement is never wasted. But a high performance endorsement isn't a flight review and doesn't replace one. What's due next month is the flight review (61.56), and completing a phase of WINGS counts as one. Option B is the answer.

Working toward your instrument rating is a great next step. But the written is a knowledge test, not a flight review. Passing the instrument checkride would count (61.56(d)), but the written alone doesn't. Completing a phase of WINGS does. Option B is the answer.