A bundle of flowers is called a 

Option D is the correct option. A bundle of flowers is called a bouquet. It can be classified as a collective noun. The name of a group of similar things or animals is known as a collective noun. The noun is the name of any animal, place, person, or thing. A collective noun refers to the collection of things taken as a whole. Examples of collective nouns include group, flock, gaggle, galaxy, etc. Usually, a collective noun is specific to the group. However, some collective nouns are common for everyone, like 'group'. For example, a group of people, a group of dogs, etc.

Collective nouns are unique because they describe a collection of individuals or things grouped together under a single name. Examples include flock, group, herd, gaggle, and galaxy. Some collective nouns are specific to particular groups, such as a flock of birds or a herd of cows, while others like group are more generalized, applicable to various collections, such as a group of people or a group of dogs. These nouns help to simplify the language by referring to multiple entities with one term.