A:AnswerThere are a lot of factors for this. Here is just one reference on the IRS.gov website, but you should check with a CPA or tax attorney if there is a question.
https://www.irs.gov/publications/p503/ar02.html
A:AnswerI got the basic because I had standard deductions. It really depends on how difficult your return may be. You can read the back of the box and it will tell you if it is the right one for you situation.
A:AnswerAccording to the TurboTax website, K-1 forms are included in the Basic edition. Look at "View Forms" on this link under the Basic column:
https://turbotax.intuit.com/personal-taxes/cd-download/