Answer:
The answer is a Carbohydrate!
1. Well developped offspring, and portable baby food despencing. Mamalian young are generally quite well developed when they are born, and the parent does not need to find any specific types of food for the new born since the mother already provides te perfect nutrition.
2. Internal heating allows mammals to remain quick and active in cold climates.
3. Fur is really effective and cheap to produce.
Answer:
The correct option is A. Algae
Explanation:
Algae is the best possible answer because the process of photosynthesis can be carried out only by plants, algae and cyanobacteria. Hence, option A is correct. These organisms are called autotrophs as they are capable of making their own food.
Other organisms like paramecium, arthropods and fungi are not capable of photosynthesis. These organisms like arthropods are called heterotrophs. They do not make their own food and feed on other organisms for food.