Choose the correct sentence: I assured him of my sincere help., I assured him for my sincere help., I assured him of my sincerely help., I assure him to my sincere help.

Question context

This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.