$5$

Homework $*$ Unanswered $*$ Due Mar $24$th$,11$:$59$ PM

Which of the proposed syntheses below would not work as written?

All would succeed

Select an answer and submit. For keyboard navigation, use the up$/$down arrow kevs to select an answer.

a

b

$2.$

c

$3.$

d

$4.$ all would succeed