Read the poem:
shall i compare thee to a summer’s day?
thou art more lovely and more temperate.
rough winds do shake the darling buds of may,
and summer’s lease hath all too short a date.
sometime too hot the eye of heaven shines,
and often is his gold complexion dimmed;
and every fair from fair sometime declines,
by chance, or nature’s changing course, untrimmed;
but thy eternal summer shall not fade,
nor lose possession of that fair thou ow’st,
nor shall death brag thou wand'rest in his shade,
when in eternal lines to time thou grow'st.
so long as men can breathe, or eyes can see,
so long lives this, and this gives life to thee
where does the tone shift in the poem?

1. c- the tunnel project was worthwhile.

2. b- to inform about the value of the tunnel project

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation:

ok if it wasn't the hans one it was probably c or he thought the mountain was collapsing on them.