"........ most people would agree that telling deliberate lies is wrong, except perhaps in certain special situations where more harm will be done by telling the truth. Even the most truthful people probably tell a good many more lies that might be regarded as semantic lies; their use of words contains some measure of falsehood, more or less deliberate." The idea which the first part of the passage mention is

Option (a) is indeed correct. Since the first part of the passage is missing, we need to infer its likely topic based on the continuation. From the provided passage, it's reasonable to assume that the first part discusses the idea of agreement in telling lies, as this aligns with the subsequent discussion where individuals disagree on truth-telling. Options (b) and (c) are incorrect because they misinterpret the focus of the first part of the passage. The passage doesn't emphasize agreement on telling lies; rather, it sets up a contrast between agreement and disagreement regarding truth-telling. Option (d) is incorrect because it suggests that the passage agrees that telling the truth can harm people, but the passage actually discusses the disagreement on the implications of truth-telling, not a consensus about its potential harm. So, option (a) is indeed the most accurate choice.