Track
to be honest both sports are VERY time consuming, trust me track has practice everyday plus meets that lasts hours, although tennis is a bit more free but is very painful, trust me when you get home from tennis and wake up the next day , you won't be able to move. Both options are quite exhausting and equally physically good but since you did track last year i would explore your options and join Tennis (-:
I was in HS Track but all I won was insult from the tennis courts.
You should do track (I personally wouldn't). I think you should because speed can be used in many different sports including basketball, plus running is good for your overall health.
Anna, you quit track because you got tired. You've never played completive tennis may I recommend you try out for the debate team........................