Which one of these lines uses iambic parimeter

ambic pentameter is fives sets of iambs, or one unstressed followed by one stressed.

The only choice that matches that description is option A.  

The others all start with a stressed syllable, so they can not be iambs.

Explanation:

hope its helpful for u

don't enter the room

explanation:

or you can just ask him to move away from his house

explanation:

b the manazanar relocation center was located in california. it was used to keep japanise from spying on america.

the reasons for the harsh treatment, is because japan used tourist to take pictures and snapshots of pearl harbor.

many americans were afraid that the japanise would betray them for their mother country. through and means necessary. this means that, the leadership in japan is a lot different than it is here. culture and family ties has much to do with their outlook and worldview.