Concept:
An effective teacher encourages curiosity, critical thinking and self-directed learning. Students who ask questions should be motivated to explore and discover answers on their own.
Step 1: Understand the objective of teaching.
Questioning is a positive learning behaviour that promotes deeper understanding and independent thinking.
Step 2: Analyse the options.
• Encouraged to find answers independently -- Correct; promotes inquiry-based learning. \checkmark
• Advised to meet the teacher after class -- May be used occasionally but is not the best general approach.
• Asked to see the guide at home -- Does not encourage active learning.
• Advised not to disturb during the lecture -- Discourages curiosity.
Step 3: Final conclusion.
Hence, the correct answer is
\[
\boxed{\text{Encouraged to find answers independently}.}
\]