Which Arrangement of Ch2Cl2 should posses the strongest intermolecular attraction

[Hildana_2I]

Can anyone explain why question 3F. 13's answer is arrangement 2?

[Varsha 1G]

For this question, arrangement 2 is the most favorable because the negative charges on the Cl are closest to the positive charges on the hydrogen. This can contribute to dipole-dipole interactions. Remember that you always want like opposite charges to be as close together as possible so that the effect of those charges can be canceled out/lessened by their proximity.