Step 1: Analyze the relationship between Milk and Emulsion.
- Milk is an emulsion of fat in water, which is a type of mixture where fat droplets are dispersed in a water-based liquid.
- In a similar way, butter is a type of suspension, where fat is suspended in a liquid.
Step 2: Conclusion.
Therefore, the correct answer is 2. Suspension, as it maintains the same relationship between Milk and Emulsion as Butter and Suspension.

Arrange the following needs in the order in which they appear in the Maslow's Hierarchy of Needs, starting from bottom to top.
(A) Social
(B) Physiological
(C) Esteem
(D) Safety
Which figure comes next in the given series below?

