Explanation

The correct meaning is: "Harbinger of serious problem."

The phrase "canary in the coal mine" refers to an early warning or indicator of a larger issue.

In this context, it means that the stories of seniors with economic distress due to student loans signal a broader, more serious problem.

Explanation

Formerly known as Southern Rhodesia, the country became Zimbabwe in 1980 upon gaining independence.

The name Rhodesia was used until 1979, with the legal name Southern Rhodesia continuing until Zimbabwe's independence.

Explanation

A complex sentence contains an independent clause and at least one dependent clause.

Commas are used as follows:

• No comma is needed if the independent clause comes first.
• A comma is placed after the dependent clause if it comes first.

Explanation

A weather balloon is not fully inflated on the ground because the air inside the balloon would expand and may burst as it rises.

The atmosphere is less dense at higher altitudes, so the pressure inside the balloon becomes greater than the pressure outside.

This causes the balloon to expand until it reaches its elastic limit and bursts.

Weather balloons typically burst at altitudes of over 15 miles (24.1 kilometers).

If a balloon were fully inflated on the ground, the gas would need to be vented out and wasted as it expands. 

Explanation

The poet of Sindh known as the "Poet of Haft Zaban" is "Sachal Sarmast."

He earned this title for his proficiency in writing poetry in seven languages.

Explanation

Prime Minister Muhammad Ali Bogra resolved the East-West representation issue in the 1950s with the "Bogra Formula," ending a six-year constitutional deadlock.

This breakthrough, achieved by the end of 1953, helped advance the stalled constitution-making process.

Explanation

Given sequence: -8, -5, -2, ..., 7

We have:

a = -8 (first term)

d = 3 (common difference)

Let 7 be the nth term

Using the formula: tn = a + (n - 1) d

7 = -8 + (n - 1) 3

Solving for n:

15 ÷ 3 = n - 1

n = 6

Now we have:

a = -8

d = 3

n = 6

Substituting these values in the formula for sum:

S₆ = (6/2) × [2 × (-8) + (6 - 1) × 3]

= (6/2) × [-16 + 15]

= 3 × -1

= -3

Therefore, the sum of the given sequence is -3.

Explanation

Surface tension acts like a stretched membrane on the water's surface, and the surface tension along the blade's edges is greater than the blade's weight.

The force of surface tension acts tangentially to the liquid surface on the circumference of the blade.

Explanation

A cardiologist specializes in the heart.

A chiropractor focuses on joints and the musculoskeletal system.

Explanation

The Muslim League did not support the Quit India Movement because it was aimed at both Muslims and then British. Instead, the League demanded "Divide and Quit".

The Muslim League, the Communist Party of India, and the Hindu Mahasabha did not support the movement.