D. People are like lawns. Lawns and flowers have a remarkable beauty. But they soon wither without attention. Only God's Word lasts forever. To add you have to subtract.
Milk is great for starting out.
Elsewhere Bible criticizes those who need it, but only because they should have progressed farther. He wants you to have a full life. Now that you have purified yourselves by obeying the truth so that you have sincere love for your brothers, love one another deeply, from the heart. For you have been born again, not of perishable seed, but of imperishable, through the living and enduring word of God. And this is the word that was preached to you.