Explanation

Explanation

In the sentence "Hyder is my best friend," "best" is an adjective.

It describes the noun "friend" by indicating the highest quality or level of friendship.

Explanation

"Either" is used to indicate that there are two options, and the person is open to considering both.

The word "or" is used to connect the two options.

Explanation

"Gigantic" is an adjective.

Because it describes the size or scale of something.

It means something is huge or enormous.

Explanation

In the sentence "The hand has five fingers", the word "five" is an adjective modifying the noun "fingers".

It describes the number of fingers, so it's an adjective.

Explanation

An adjective phrase typically comes immediately after a noun to provide more information about it.

It describes or modifies the noun.

This giving details such as size, color, or quality.

Explanation

"Ill taught" is an adjective phrase.

It describes someone who has received poor or incorrect instruction.

Explanation

The word "tall" describes the height of the noun "building."

It functions as an adjective in the sentence.

Explanation

The word "sweet" describes the quality of the noun "mango."

It functions as an adjective in the sentence.

Explanation

The correct replacement is "He is much obliged."

"Much" is used to express a greater degree of obligation or gratitude.