Gobind Singh, the tenth Sikh Guru, was the son of which Sikh Guru?

Introduction / Context:
Guru Gobind Singh, the tenth Sikh Guru, played a vital role in Sikh history by founding the Khalsa and giving the community its present form and discipline. Many general knowledge questions focus on the Sikh Gurus and their relationships. This question asks you to identify the father of Guru Gobind Singh from among earlier Gurus.

Given Data / Assumptions:

• The person mentioned is Gobind Singh, the tenth Sikh Guru.
• We need to select the Sikh Guru who was his father.
• Options list Guru Nanak Dev, Guru Arjun Dev, Guru Ramdas, Guru Tegh Bahadur and Guru Har Gobind.

Concept / Approach:
The approach is to remember the order of the ten Sikh Gurus and specific family relations. Guru Tegh Bahadur was the ninth Sikh Guru and the father of Gobind Singh. He was martyred for defending religious freedom, and after his martyrdom, Gobind Rai, later known as Guru Gobind Singh, became the tenth Guru. The other names belong to earlier Gurus who are ancestors in the spiritual sense but not his direct biological father.

Step-by-Step Solution:
Step 1: Recall the sequence: Guru Nanak Dev as the first, followed eventually by Guru Tegh Bahadur as the ninth and Gobind Singh as the tenth Guru.Step 2: Remember that historical accounts clearly describe Gobind Singh as the son of Guru Tegh Bahadur.Step 3: Look at the options and pick out Guru Tegh Bahadur among them.Step 4: Recognise that Guru Nanak Dev founded Sikhism centuries earlier and cannot be the father of the tenth Guru.Step 5: Guru Arjun Dev and Guru Ramdas are earlier Gurus in the lineage but not his direct father.Step 6: Guru Har Gobind is another earlier Guru, again not the father of Gobind Singh.

Verification / Alternative check:

Why Other Options Are Wrong:
Guru Nanak Dev is wrong because he was the founder and first Guru, several generations earlier.Guru Arjun Dev is incorrect because he was the fifth Guru and not the father of Gobind Singh.Guru Ramdas is the fourth Guru and again not the father in question.Guru Har Gobind, the sixth Guru, is historically important but not the father of Gobind Singh.

Common Pitfalls:
The main pitfall is confusion between the numerical order of Gurus and their family relations. Some candidates may guess Guru Nanak Dev simply because he is the most famous. Others might confuse Tegh Bahadur with Har Gobind. To avoid this, memorise the list of Gurus in order, along with one key detail about each, including family relationships where relevant.

Final Answer:
The correct answer is Guru Tegh Bahadur.