Final answer:
The correct answer is a. away from, toward, as electric field lines extend away from positive charges and move toward negative charges, following the behavior described by Coulomb's law.
Step-by-step explanation:
Electric field lines are directed away from positive charges and toward negative charges. Therefore, the correct answer to the question is a. away from, toward. Electric field lines start at a positive charge and point away from it, indicating the direction a positive test charge would be pushed due to the electric force. Conversely, electric field lines end at a negative charge, indicating that a positive test charge would be pulled toward it. This convention aligns with Coulomb's law, which states that opposite charges attract and like charges repel.