which one these lines uses iambic pentameter ?

B. I put a tree in front of Peter's vase

Explanation:

An iambic meter refers to lines of poetry containing iambs. An iamb is a metrical foot (a group of syllables) that has one UNSTRESSED syllable followed by a STRESSED syllable. Depending on the number of iambs that there are per line, they can be classified into dimeter (two iambs per line), trimester (three), tetrameter (four), pentameter (five) or hexameter (6).

In the passage, the line that uses iambic pentameter (five iambs) is option B. Take a look at the line (the underlined and bolded syllables are the stressed ones, the rest are the unstressed syllables):

I put a tree in front of Peter's vase = 5 iambs

idk srry

explanation:

nambe vazhkaile elam nala irukum