The last one. It makes most sence instead of the first three.
The above said- statements holds true concerning today's life as well. Buddha said that death is common to all mortals. Those are born must die one day. Death is certain, can't be avoided.As ripe fruits fall of the trees, so is the life of mortals.Life of a man is like an earthen pots that breaks and meets its end. No amount of weeping and lamenting produce no gains.It rather spoils one's health and gives more pain.If only you take out the arrow of lamentation and get composed, you will get peace of mind.To overcome sorrow, become free of sorrow.But in today's world, man has forgotten this.He makes all kinds of efforts to provide himself with the comforts and earns money by all means whether wrong or right. He forgets that one day he has to die and everything will be left here here only.
Answer: I think it may be A. (It shows how determined Elion was to learn more about biochemistry.)
20 heat
21 sound
22 form
23 book
24 geo