<p>Being lost in the mountains of Colorado for two days as a boy, Dave is always careful to take a detailed map with him when he sets out for a backpacking adventure in the wilderness.</p>
<p>I know that choice A is wrong, but I'm also confused about choice D. Why shouldn't it be "whenever" instead of "when?"</p>
<p>Thanks in advance!</p>
<p>substituting whenever for when doesn’t really change the meaning of the sentence, and it does not enhance the grammatical structure because when is correct as it is. therefore you should choose, or should have chosen, A which is a blatantly conspicuous answer; whenever you see being, it is often “SAT-grammatically” incorrect.</p>
<p>I agree- sometimes it’s just about which choice is ‘more wrong’ than the other one. Obviously A should be “having been” or something like that. A lot of times I’ll correct sentences and I still think they’re terrible, but the SAT doesn’t let you use red pens. =P</p>
<p>One of the denotative senses of “when” is “whenever,” so swapping “whenever” for “when” would never render something correct.</p>
<p>wait… so you mean that when and whenever are different?</p>