Hi there, this is art history class explain the pic. please do not use wikipedia.
To get an A means you did an exceptional job- not a good job, not an ok job, an excellent job. So, take it seriously. Look at the image-pick the one you like. Then explain what style it is, what about it makes it that style, any important biography of the artist, location if that is important to understand the work, any religious or political eventsMI that informed the work- think about iconography, technique, meaning. You may include your opinion but do that last- An A test must be excellent-