The correct framing of the above sentence would be as follows:
There was a phone on the floor, so I picked it up and said “whose phone is this?". This is because whose is a possessive pronoun.
The pronouns who, whose, and whom can be further understood as explained below:
• The words who, whom and whose are called pronouns, which are used in place of nouns to avoid repetition.
• Who is a subject pronoun, for example- 'he', 'she' and ‘they’. It is used to figure out which individual is doing an action.
• Whom is an object pronoun, for example- him', 'her' and 'us'. It is used so as to see which individual was the recipient of any action.
• Whose is a possessive pronoun, for example- 'his', 'our', etc. it is used as to figure out who is the owner of any object.
Therefore, the correct option would be option A. whose.
Learn more about pronouns here:
https://brainly.com/question/23492729
