A) He can love her only if she follows his instructions.
Explanation:
This could be seen in his reference in the letter the statment below:
<em>"The acquirements which I hope you will make under the tutors I have provided for you will render you more worthy of my love; and if they cannot increase it, they will prevent its diminution".</em>
This shows that, he expected her to follow the instructions inorder to increase his love for her but was uterly disappointed because, her daughter never followed any of those instructions in the letter.