Explanation

A first person narrative uses "I" or "we", showing the story from the narrator's point of view.

The sentence "I could not believe what I had just seen" clearly uses first person ("I").

Explanation

During prophase, each centrosome forms astral rays, which are star-shaped microtubules radiating outward.

These help in spindle formation and chromosome movement.

Explanation

The correct sentence is: "She will finish the work by tomorrow."

"Will" is the appropriate auxiliary verb to indicate future action.

Explanation

3 divided by 9 simplifies to 1/3.

Equivalent fractions represent the same value when simplified.

Explanation

A proper fraction has a numerator smaller than the denominator, meaning its value is less than 1.

7/8 is the only one that meets this condition.

Explanation

Explanation

The migration of people from rural to urban areas increases the demand for housing, often outstripping supply.

This rapid urbanization leads to overcrowding and a shortage of affordable housing in big cities.

Explanation

The union of two sets A and B includes all elements that are in A, B, or both.

This is represented as: A ∪ B = {x | x ∈ A or x ∈ B}.

Explanation

A group of lions is called a pride.

Flock refers to birds.

Pack refers to wolves.

Explanation

The total sum of all exterior angles of any triangle (or any simple polygon) is always 360°, regardless of its shape or size.

Each exterior angle of an equilateral triangle is 120°.