The anti conformation is by definition always the lowest energy conformation possible for a bond rotation.

Question

Quizplus · Accepted Answer

The anti conformation is generally the lowest energy conformation for simple alkanes due to minimized steric hindrance, but it is not always the lowest energy conformation for all molecules, as factors like hydrogen bonding, ring strain, or electronic effects in more complex molecules can favor other conformations.

The Anti Conformation Is by Definition Always the Lowest Energy