Step 1: Defining malnutrition
- Malnutrition refers to deficiencies, excesses, or imbalances in a person's intake of nutrients, leading to health problems such as stunted growth, weakened immunity, or obesity.
Step 2: Analyzing the options
- (A) Lack of education: Education plays a significant role in understanding proper nutrition and health, which can prevent malnutrition.
- (B) Economic status: A poor economic status can limit access to nutritious food, making it a major contributor to malnutrition.
- (C) Lack of child care: Inadequate child care, such as poor feeding practices, can also contribute to malnutrition, especially in children.
- (D) All of these: Since each of the above factors contributes to malnutrition, this is the correct answer.
Step 3: Conclusion
Thus, the correct answer is (D) All of these as all listed factors are significant causes of malnutrition.
\[
\boxed{\text{Correct Answer: (D) All of these}}
\]