Active immunity
Active immunity is when something triggers an immunity system to produce antibodies, this something being a vaccine. Hope this helps!
A. Because if he prepared the food himself there is a high chance the food will go bad faster because he did not but it.
The toddler is likely to learn and acquire something more in the zone or layer of proximal development if and only if the tasks given to them are more challenging or more difficult that their age can do. The are triggered to think harder to complete the task since it was common for to them to insist and push the things they wanted to have regardless if how hard it can be. Such as 5-year-old kid is given toys and books that are supposed for 7-10 years old. Or a 10-year old kid is assigned to do household chores that his older brother or sister has been doing.
Explanation:
the answer is T............
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