Question

the distant boom of artillery switched from its sporadic night rhythm to the purposeful daylight pounding. source: fallen angels in the sentence above, purposeful has the same or almost the same meaning as: graduated determined tangible marginal

Explanation:

"Purposeful" implies having a clear aim or intention. "Determined" also suggests having a firm resolve and clear - cut purpose. "Graduated" relates to levels or steps, "tangible" means touchable or real, and "marginal" means minor or peripheral.

Answer:

B. determined