Explanation

To reduce reliance on a few export sectors and increase resilience to global economic fluctuations,

Pakistan should diversify its export base.

Encouraging export-oriented industries, supporting small and medium enterprises (SMEs),

and developing high-value-added products can help boost exports

Explanation

The field which deals with the study of the heart and blood vessels is called Cardiology.

Cardiology is a branch of medicine that deals with disorders of the heart and the cardiovascular system.

Explanation

To find the mode, we look for the number that appears most frequently in the dataset.

In the given dataset: 4, 5, 7, 4, 9, 1, 3, 0

The number 4 appears twice, while all other numbers appear only once.

Therefore, the mode of this dataset is 4.

Explanation

Painting was here before it was sold to an art firm.

In the sentence, "was" is used as the past tense of the verb "to be."

It indicates that the action (painting) existed in the past.

The phrase "was here" indicates that the painting existed in a particular location before it was sold to an art firm.