Explanation

Explanation

A mastery test measures whether students have acquired the minimum basic knowledge and skills required in a subject.

It determines if learners have achieved mastery before moving on to more advanced material.

Explanation

The correct option is: (c) On page 3, there is an advertisement for a new video camera.

This sentence is grammatically correct and conveys the intended meaning.

It uses the preposition "for" to indicate the purpose of the advertisement, which is to promote a new video camera. 

Explanation

In gymnosperms, the ovule is covered by an integument, which is a protective layer.

Explanation

Against: This is the correct preposition.

"Leaned against" is the standard phrase used to indicate that someone is resting or supporting themselves on a vertical surface, like a wall. 

Explanation

Asking students for introspection and allowing them to improve themselves involves engaging them in understanding the impact of their behavior and encouraging them to take responsibility for their actions. 

Explanation

Instructional objectives are specific goals that represent the purpose of instruction set by the teacher.

They outline what the teacher aims to achieve through their teaching and provide a clear focus for both instruction and assessment.

Explanation

Ambivalent means مبہم

Clear means ظاہر

Explanation

The phrase "used to" is correctly followed by the base form of the verb to describe a habitual action in the past. 

Explanation

Hasty means جلد بازی

Cautious means محتاط