I presume you're intending to enroll in the straight Bachelor of Arts degree? If so, there's a couple of pathways you could take.
First, if you enroll in two single arts subjects at La Trobe and pass them both, you'll be guaranteed entry into the BA. You'll need to pay for these units upfront though (nearly $700 each), but you can credit these units towards your BA degree. You have to apply directly to the university - not through VTAC - if you choose this option. (
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Second, some post-secondary Certificates or Diplomas can act as a suitable pathway to the BA at La Trobe, such as the Diploma of Liberal Arts. You can gain credit for up to eight first-year units of study of your BA depending on which subjects you chose in your Diploma. (
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Third, you could enroll in the BA at another La Trobe campus or university and apply for a transfer after one year.