Yep, that's basically the whole task. To change the passage to become more 'upbeat', yet still share similar words to the previous words, the following could be changed to...
trudged= plodded
shuffled= staggered
scrutinised= questioned
sparse=meagre
closed in= confined
anxious= eager (Although eager and anxious generally do not share a similar definition, in this context they do as 'anxious' is used to describe being excited to do something, and share the same meaning of 'Very eager or concerned to do something or for something to happen'
pried= wrenched
confronted= suddenly exposed
puzzling=baffling
something=remarkable
used=castoff
questioned=pondered
anxious=uneasy
D is your answer hope i helped you
The answer is letter D. the object of the sentence.
Since "a frog" is the recipient of the subjects action, it is considered the object of the sentence.
Thank you for posting your question. Feel free to ask me more.
I believe the answer is D because it gathers all the information that was introduced in the passage. With the eyesight and the toys.