I think that the answer should be d. Believe it or not Joe, it is time for us to leave.
I would say the northern steppe so your answer is C and if that is wrong then for surly A but 99% its C
The correct option is number 2 "when". The reason is that the author wants to make reference to the year 1960, and the pronoun "when" refers to points in time. The pronoun "there" is used to refer to Alexandria, so option 1 is not correct, rather it is redundant. Option 3 simply does not apply, since the relative pronoun "which" is used to refer to objects.
