The word partition refers to the act of dividing any space into two parts or more.
In the above sentences, the sentence which uses the word partition correctly is 2. Becky stood behind the partition that separated the audience from the people backstage and waited for her cue to enter.
In the above sentence, the words partition separates the two spaces, space of audience with that of space of people backstage.
Other sentences do not confine with the proper use of word partition because it relates the division of object and not spaces. Hence, sentence two is correct.
Although the league produced many fine players including Bonnie baker and Dorothy kamenshek. The AAGPBL declined in popularity in 1954.
If you write one sentence describing the original paragraph's hook, and then a second sentence describing any supporting evidence in the paragraph, and then a third sentence describing the topic sentence, you will have written your critique.