Is this sentence correctly punctuated?

2. We will need to think carefully about what we take with us - (tents, sleeping bags and torches are essential)

1 answer

No.
Study the other links I gave you, plus the one here:
http://grammar.ccc.commnet.edu/grammar/marks/period.htm

One more try, so be careful. Read and study what I've sent you. The answers are there.