This answer is correct! The solvent is non polar and methyl iodide will not ionize so these conditions favor carbon alkylation. This is explained by the hard-soft acid base theory. Soft acids form strong bonds with soft bases and hard acids form strong bonds with hard bases. A carbanion is a soft base and the methyl carbon atom is a soft acid. The oxide anion of the enolate ion is a hard base and a carbocation is a hard acid...therefore, oxygen alkylation is not favored.