a) Devotional service in practice means following a practicing devotee.
b) Devotional service in practice means practicing austerities for advancement in devotional life
c) Devotional service in practice means developing the taste for devotion
d) Devotional service in practice means employing both the mind & the senses in practical devotional service
The correct answer is
d) Devotional service in practice means employing both the mind & the senses in practical devotional service