The prepositional phrase in the sentence "At the museum we saw paintings and sculptures". is "At".
<h3>What is prepositional phrase?</h3>
Prepositions and postpositions are a class of words used to mark various semantic obligations as well as to transmit spatial or temporal relationships (in, under, towards, or before). Adpositions (or, more generally, prepositions in classical grammar) is the term for this word group (of, for).
The term "preposition's complement" or "postposition's object" refers to the union of a preposition or postposition and a noun phrase. In contrast to a preposition, a postposition comes after its complement. Although there are a few exceptions, such "ago" and "notwithstanding," as in "three days ago," English tends to employ prepositions more frequently than postpositions. Prepositional phrases like in England, under the table, and of Jane are used before their respective objects.
To learn more about from prepositional phrase the given link:
brainly.com/question/4956879
#SPJ4