Which pair of words has similar denotations but different connotations?
a. vivid, bright
b. annoying, irritating
c. brave, courageous
d. cautious, timid

Answer :A. Vivid, bright

 The pair of words that has similar denotations but diffent connotaions is (A) vivid, bright.

Denotations:

Vivid - very brightly coloured, radiant, glowing etc.

Bright - full of light, shining; strong in colour.

Connotations:

Vivid - lively, interesting, fascinating, emotive, dramatic etc.

Bright - clever, intelligent, inventive, sharp, alert etc.

The pair of words that has similar denotations but different connotations is Brave, courageous

Explanation:

Denotation is the literal meaning of a word as in a dictionary, while Connotation is the emotional meaning or the feeling that it can produce depending of each person or culture, then the words Brave and courageous represent in the literal meaning a person that is not afraid of any situation, but in terms of connotation they refer to different kinds of people while the brave person is not afraid when they have to face danger, the courageous person has a constant demonstration of bravery towards life.

a structured set of data held in a computer, especially one that is accessible in various ways. here is an example

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