Conclusion

What we see: a "conclusion can be drawn" question. We need the choice the facts force, with no outside guessing.

Step 1. Pin down the two facts that matter.
What we see: the day pass costs \(\$2.50\) for unlimited rides in 24 hours. The consumer advocate says it "did nothing for the average city commuter, who rides the subway only to and from work each business day."
What it means: the average commuter rides 2 times a day. The pass would help that commuter only if 2 rides cost more than \(\$2.50\). We are told it does nothing for them.
What we do and why: we accept the advocate's statement as true (the question says every statement is true), and ask what the price of one ride must be for it to hold.

Step 2. Turn that into a number.
What we see: 2 rides cost no more than \(\$2.50\).
What it means: one ride costs no more than \(\$2.50 \div 2 = \$1.25\). If one ride cost more, say \(\$1.50\), the commuter would pay \(\$3.00\) a day and the pass would save money, so it would help them.
What we do and why: we look for the choice that says one ride costs \(\$1.25\) or less.

Step 3. Test the choices.
A is about a committee meeting. Nothing in the passage mentions one.
B says commuters are unhappy and leaving the subway. The passage never says that.
C is about emergency funds. Not mentioned.
E says a four day pass for \(\$10\) would help tourists just as much. That is the same \(\$2.50\) a day, but a tourist staying fewer days would lose money, and nothing says how long tourists stay.
The one left says a single ride costs no more than \(\$1.25\). That is exactly what Step 2 forced.

The trap: B. It sounds like what an unhappy consumer advocate would say. But a conclusion must come from the facts given, not from what the speaker might also believe.
Faster way: when a passage gives a price and says a deal "does nothing" for someone, work out the break even number (here, 2 rides for \(\$2.50\)) and look for it in the choices.
Takeaway: in "must be true" questions with numbers, turn the words into a small sum. The right choice is usually that sum said in words.

Answer: D