The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
They had been thrown
X-upon their own exertions at an Y-battle to fight with poverty and ignorance Z-early age, and had a hard
Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?