Which revisions eliminate the vague pronoun in the sentence below? Check all that apply. Marissa dropped the vase on the glass table and broke it.

Marissa broke the vase when she dropped it on the glass table.
Marissa, when she dropped the vase on the glass table, broke it.
When Marissa dropped the vase on the glass table, she broke the vase.
The vase broke when Marissa dropped it on the glass table.
Marissa dropped the vase on the glass table, and she broke it.

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.

basic principle: a pronoun usually refers to something earlier in the text (its antecedent) and must agree in number — singular/plural — with the thing to which it refers. the indefinite pronouns anyone, anybody, everyone, everybody, someone, somebody, no one, and nobody are always singular.