<p>Learning from recent field tests,the efficiency of the engine on which they would base next year’s trucks was significantly increased by the designers .
I am confused between :
(B) the designers based next year’s truck engine on a signifacnt increase in efiiceney
(C) the designers significantly incresed the efficiency of the engine on which they would base next year’s trucks
Thank You</p>
<p>Please help me by answering !!</p>
<p>There are unfortunately several typos in your post. I’ve corrected them. Your question is what is the best replacement for the clause in brackets</p>
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<p>While ** is “correct” grammatically it is nonsense. The main point of an engine is to power the vehicle efficiently. Efficiency is an attribute of the engine, much like the color yellow is an attribute of a lemon. In (B) it’s not clear what efficiency refers to. Nor is the choice of the verb “based” precise.</p>
<p>Thanks fogcity and Sorry for the errors :(</p>