Reservations in this context could mean doubts, such as 'My mom had reservations about going out to shop."
This means that their mom was not sure if she wanted to go shopping or not because she has reasons not to.
First of all, it is important to define preposition phrase in order to find it in this sentence. We can say that "<span>a prepositional phrase will begin with a </span>preposition<span> and will end with a </span>noun<span>, </span>pronoun<span>, </span>gerund<span>, or </span>clause<span>, the "object" of the preposition"
</span>
*In this case, we find UNTIL TODAY as the only prepositional phrase presented. until is the preposition and today is the noun.
Answer:
yes indeed they will only learn simple things as they grew until old enough to do more complicated things and will need protection from the parent for a while
Explanation:
