Which of the following can solve the problem of hidden hunger?

Biofortification

The correct answer is Option (2)-Biofortification

Biofortification – breeding crops with higher levels of vitamins and minerals, or higher protein and healthier fats – is the most practical means to improve public health. Breeding for improved nutritional quality is undertaken with the objectives of improving –
(i) Protein content and quality;
(ii) Oil content and quality;
(iii) Vitamin content; and
(iv) Micronutrient and mineral content

The other options are not as effective at solving the problem of hidden hunger:

• MOET (Multiple Ovulation Embryo Transfer) is a technique for increasing the number of offspring produced by a female animal. It is not directly related to improving the nutritional content of food crops.
• SCP (Single-Cell Protein): One of the  alternate sources of proteins for animal and human nutrition is Single
  Cell Protein (SCP). Microbes are being grown on an industrial scale as source of good protein.Example: Spirulina
• Hybridization Hybridization can indeed improve the quality and yield of crops, but it may not be the most effective approach to specifically address hidden hunger, which is primarily related to micronutrient deficiencies. Hybridization generally focuses on improving traits such as yield, disease resistance, or other agronomic characteristics but may not always target the specific nutrient content of crops.

Therefore, biofortification is the most effective way to solve the problem of hidden hunger.