To help a friendship grow, the best option from the given choices is:
A. Respect each other's boundaries.
Respecting boundaries is crucial in any relationship, as it fosters trust, understanding, and mutual respect. Buying expensive gifts (B), always letting the other person have their way (C), or being intimate too soon (D) can create imbalances or discomfort in the relationship. Building a strong friendship is best achieved through open communication, respect, and understanding each other's needs and limits.