masked - concealed, hidden, or disguised

• Example: Her smile masked her true feelings of sadness.

belied - contradicted or gave a false impression of

• Example: His calm demeanor belied his inner turmoil.

betrayed - failed to support or be loyal to; reveal something (information/secret) of someone to his opponent

• Example: His trembling hands betrayed his nervousness.

suppressed - subdued or restrained; kept secret

• Example: The government suppressed the news of the protest.

His rather casual remarks on politics revealed / betrayed his lack of seriousness about the subject.

Circuitous

Means indirect or roundabout. It describes something that takes a long, complicated, or winding path rather than a direct one.

Cyclic

• Meaning: Happening again and again in a regular pattern.

• Example: The seasons are cyclic, with winter following autumn.

Indirect

• Meaning: Not direct or straightforward; roundabout.

• Example: She gave an indirect answer to the question.

Confusing

• Meaning: Difficult to understand or clear; perplexing.

• Example: The instructions were confusing, so I asked for help.

Crooked

• Meaning: Not straight or honest; dishonest or morally wrong.

• Example: The crooked politician was caught in a scandal.

If we manage to conserve our natural resources, we would leave a better planet for  our children.

Worker lost the job and became unemployed

Fallow Meaning- lost fertility

Land lost the fertility and become fallow

D) People in military establishmnts like to use chemical agents in war.

This option accurately reflects the central point of the passage: there are individuals within military organizations who believe chemical agents are effective tools for warfare.

Let's assume the total work required to build a wall is 'W'.

• Work done by 5 skilled workers in 1 day = W/20

• Work done by 1 skilled worker in 1 day = W/(20*5) = W/100

• Similarly, work done by 1 semi-skilled worker in 1 day = W/(25*8) = W/200

• And work done by 1 unskilled worker in 1 day = W/(30*10) = W/300

Now, we have a team of: 2 skilled workers, 6 semi-skilled workers, 5 unskilled workers

Total work done by this team in 1 day:

• 2 * (W/100) + 6 * (W/200) + 5 * (W/300) = 40 W / 600

Let's assume the team takes 'x' days to build the wall. Therefore,

(40 W/600) * x = W 

x = 600 / 40 = 15 days

So, the team will take approximately 15 days to build the wall.