Explanation

Operant conditioning, developed by B.F. Skinner, is learning based on the consequences of behavior (rewards or punishments).

Behavior is strengthened or weakened depending on whether it is followed by reinforcement or punishment.

Explanation

Need analysis in curriculum development identifies the gap between what is taught (theory) and what is required in real-world application (practice).

It ensures the curriculum is relevant and meets learners' practical needs.

Explanation

Given sets A = {1, 2, 5, 3} and B = {3, 4}, and assuming the universal set U = {1, 2, 3, 4, 5}:

Step 1: Find B'

B' = U - B

= {1, 2, 3, 4, 5} - {3, 4}

= {1, 2, 5}

Step 2: Find A ∩ B'

A ∩ B' = {1, 2, 5, 3} ∩ {1, 2, 5}

= {1, 2, 5}

Explanation

In the sentence "They showed much patience":

"Much" is an adjective modifying the noun "patience" (quantifying it).

"They": Pronoun (subject).

"Showed": Verb.

"Patience": Noun.

Explanation

An aqueous solution is one where the solute is dissolved in water.

"Aqua" means water, making it the key solvent in such solutions.

Explanation

A species is defined as a group of organisms that can mate and produce fertile offspring.

Organisms in different genera generally cannot produce fertile offspring.

Explanation

The single equals sign = is used for comparison in SQL conditions.

The query correctly filters rows where the Job column matches the string 'Clerk'.

Explanation

The sentence is in simple present tense.

Passive voice of "She draws a picture" becomes: "A picture is drawn by her."

Explanation

The original sentence is in past tense ("was"), so the correct question form starts with "Was."

The subject and verb are correctly inverted to form the question.

Explanation

Critical thinking begins when students are encouraged to ask questions and challenge ideas.

Questioning helps them analyze information deeply rather than accepting it at face value.