The final sentence of the passage relies on which comparison?

Medical records are among the most sensitive information anyone holds about us, yet pooled and anonymised, they are also an extraordinarily valuable research resource. Patients rarely object to research as such. Their worry is that records will be sold, re-identified or misused. Proposals that ask for permission once, in a long form, fail to meet this worry: the permission is rarely read and cannot anticipate later uses. A better model would let patients see who has accessed their data and for what purpose, set simple limits that can be changed at any time, and impose heavy penalties on those who attempt to re-identify records. Such a regime would be more demanding for researchers, but trust, once lost, is much more costly to restore than a form is to complete.

Answer and explanation

Correct answer: B. The cost of losing trust against the inconvenience of an extra requirement for researchers

  1. Step 1: It says trust, once lost, is more costly to restore than a form is to complete.
  2. Step 2: That compares loss of trust with the burden on researchers.
Answer
The cost of losing trust against the inconvenience of an extra requirement for researchers.
Why not the others: No comparison of research cost with patient benefit, printing, speed or storage is made.

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