Answer:
(a) Here are two possible research questions for this problem:
1. What are the most important factors that Indian travelers consider when choosing a foreign holiday destination?
2.How do the preferences and needs of Indian families with children differ from those of other types of travelers when booking a foreign tour package?
(b) The unit of analysis in this study would be individual Indian travelers or families with children who are considering booking a foreign tour package with ABC Travels.
(c) The independent variable in this study would be the individual or family's characteristics, preferences, and needs. The dependent variable would be their decision to book a foreign tour package with ABC Travels.
(d) The research objectives of this study could be to identify the key factors that influence the decision-making process of Indian travelers when booking a foreign holiday, and to compare the preferences and needs of families with children to those of other types of travelers. The research hypotheses could be that Indian travelers place a high value on factors such as cost, safety, and cultural experiences, and that families with children have different priorities and needs compared to other travelers.