Cross out the odd word in each line: 1. a) information, b) informal, c) incorrect, d) irregular a) activity, b) possibility, c) guilty, d) similarity a) happiness, b) membership, c) brotherhood, d) successful

Here are the odd words in each line: 1. **b) informal** - The other words (information, incorrect, irregular) are adjectives related to correctness or classification, while "informal" specifically refers to a casual style or manner. 2. **c) guilty** - The other words (activity, possibility, similarity) are all nouns, while "guilty" is an adjective that describes a state or condition. 3. **d) successful** - The other words (happiness, membership, brotherhood) are all nouns, whereas "successful" is an adjective that describes a condition or state of achievement.