Also, in choice e, the construction " close enough in order to kill " is correct? I know that "enough to do " is correct
Thanks
no.
depending on how you view the situation, it's either...
...redundant (since 'enough' conveys the entire meaning by itself),
or
...contradictory (since 'enough to...' and 'in order to...' mean different things).
either way, it's not valid.