इंजनों का निम्नलिखित में से कौन सा वर्गीकरण सिलेंडर की व्यवस्था (cylinder arrangement) पर आधारित है?

Among the following configuration types, which large multi-cylinder aircraft-type engine traditionally achieved excellent thermal and mechanical efficiency due to compact manifold design and uniform cooling?

Inline engines give better balancing and more uniform __________.