Elimination approach:
1946 and 1954 belong to the post-independence period, well after India's earliest plant-protection legislation was already in force, so they can be ruled out. 1914 is close but does not match the documented enactment year of India's first exotic-pest quarantine law. By process of elimination among the four options, 1910 remains as the year the Destructive Insects and Pests Act was passed by the colonial government of India to prevent the entry of foreign insect pests and diseases through imported plant material.
Hence, the correct answer is 1910.