The correct answer is: Only assumption II is implicit.
The statement is about the taste of food and its contribution to the intake of nourishment. The two assumptions are:
- Assumption I: Human beings take food for the enjoyment of its taste.
- Assumption II: Human beings experience the taste of food.
Assumption I is not implicit in the statement. The statement does not say anything about why human beings take food. It is possible that human beings take food for the enjoyment of its taste, but it is also possible that they take food for other reasons, such as to satisfy hunger or to obtain nutrients.
Assumption II is implicit in the statement. The statement says that the taste of food contributes to the intake of nourishment. This means that human beings must experience the taste of food in order for the taste to have this effect.
Therefore, the correct answer is: Only assumption II is implicit.