Are you wanted all the questions answered for the "find the rule " category ?
The denotation of a word is its dictionary definition.
"Lurid" means "vivid," but in an unpleasant way.
Something soothing has a calming effect; this is essentially the opposite of lurid. Invisible means literally "not visible" - more to do with senses than having a vividly unpleasant feeling. To be attentive is to be alert or aware, which does not fit our definition above. That leaves shocking, which is a feeling of unwelcome surprise or dismay; this is correct.
Answer:
Shocking
Regular nouns Most singular nouns form the plural by adding -s. ... nouns form the plural by adding -s. Examples. Singular, Plural. boat, boats. house, houses. cat, cats. river, rivers. A singular noun ending in s, x, z, ch, ...
