Read the passage and answer the question. And since the partition Wall is broken down, inordinate Self love should likewise be demolished. GOD expects that Christians should be of a more Ingenuous and benign frame of spirit. Christians should carry it to all the World, as the Israelite's were to carry it towards another. And for men obstinately to persist in holding their Neighbors and Brethren under the Rigor of perpetual Bondage, seems to be no proper way of gaining Assurance that God ha’s given them spiritual freedom. Our blessed Savior ha’s altered the Measures of the Ancient Love-Song, and set it to a most Excellent New Tune, which all ought to be ambitious of Learning. These Ethiopians, as black as they are; seeing they are the Sons and Daughters of the First Adam, the Brethren and Sisters of the Last ADAM, and the offspring of GOD; They ought to be treated with a Respect agreeable.

What does ingenuous mean in this paragraph?
A) naive
B) gullible
C) perceptive
D) sincere