[Video] Q15: No change or range: emitted by the sun during the day or range, emitted by the sun during the day or or range emitted by the sun during the day

Explanation for Question 15 From the Writing Section on the 2019 October Sat

Now number 15 is a punctuation question. 2 So the best way to go about this question is going to be process 3 of elimination. So first let's read our sentence. 4 Um, starting at light in the blue range, 5 admitted by the sun during the day, 6 causes the eye to send chemical messages to the super charismatic nucleus SCN 7 in the brain. And the first thing that we should notice about the sentence 8 as it's written here is that by the sun is set off by two 9 commas, making it what we call and a positive phrase. 10 Now, if a phrase, and it is an, a positive phrase like this one, 11 we should be able to cross it out of the sentence and the sentence 12 should still make sense. But now if we cross this off and we read 13 the sentence, it says light in the blue range emitted during the day causes 14 the eye to send chemical messages. 15 And so this sounds okay, right? 16 We know that it's submitted during the day, but we've lost a piece of 17 really important information. We don't know what emits the light, 18 right? So it's really important to know what does the emitting, 19 and so it's not a good idea to put the sun in commas because 20 it gives us more useful information. 21 And so we can eliminate answer choice. Okay. Now looking at B, 22 right? It says that we've put a colon here, 23 a colon right before, right before there. 24 And then the colon goes on here. 25 Now, if you have a colon, you should either have a list, 26 right? And we see there's no lists here first right off t...