The pictures below represent three soil profiles.

Clay forms the topmost layer of the profile.

Now comparing the three profiles, we will find that:
Profile A has almost no clay (the least of all)
Profile B has nearly twice as much clay as Profile C

This means that, Profile B has the most clay

Based on this, the best answer would be:
Profile B has more clay than profile A and profile C

Idont understand the question

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.