Answer: Option C
The relationship between sugar and sugarcane is that sugar is derived from sugarcane. Similarly, the relationship between mava and milk is that mava is made from milk. Therefore, the correct answer is option C.
Let's define some key terms:

• Sugarcane: A tall tropical grass that is the primary source of sugar.
• Sugar: A sweet substance obtained from sugar cane or sugar beet that is used as a sweetener in food and drinks.
• Mava: Also known as khoya, it is a dairy product that is made by reducing milk to a thick, solid consistency.

Here are some relevant formulas:

• The formula for sucrose, the main component of sugar, is C12H22O11.
• The formula for lactose, the main sugar found in milk, is C12H22O11.

To further understand the relationship between sugar and sugarcane, and between mava and milk, we can look at the processes involved in their production.

• Sugar is produced by extracting the juice from sugarcane and then boiling it down until it forms crystals.
• Mava is produced by simmering milk in a large, shallow pan until most of the moisture evaporates, leaving behind a solid mass.

In conclusion, the correct answer to the given question is option C, Sugarcane and Milk. The relationship between sugar and sugarcane is that sugar is derived from sugarcane, and the relationship between mava and milk is that mava is made from milk through a process of evaporation.