When is a claim based on an opinion valid?

when there is some kind of reference to find out how people have agreed to interpret a word. There should be an explanation that the physical proof links to the accused are a claim based on an opinion valid.

Plz pick me as brainliest

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."