Gesture is the correct answer.
Christian art is generally created as an expression of what the church may believe. Since there are several different types of Christianity, or branches under the large name, the church the artist goes to, or whatever religious ideas the artist has will be portrayed in his artwork. Christian art is made to support their ideas and religion, as well as give people a sort of image to look up to. After all, nobody truly knows how God looks.
C, apply your work meaningfully and to your intended audience when creating it.
Beginning, worst
(personally I like having the order 13542, 1 being best, 5 being worst, so your impression is good and you leave off with a good impression as well instead of a sour/underwhelming work
Leave a portfolio for the interviewer to review
B if it’s a general portfolio