Correct Answer  Option 1 : Economics
Five subjects viz., Economics, History, Statistics, English and mathematics
Week: Monday to Friday.
i) Only one lecture can be arranged on each day.
ii) Economics cannot be scheduled on Tuesday.
iii) Guest faculty for history is available only on Tuesday.
Days

Subject

Monday


Tuesday

History

Wednesday


Thursday


Friday


iv) Mathematics lectures has to be scheduled immediately after the day of Economics lecture
v) English lecture has to be scheduled immediately before the day of Economics lecture.
This implies that Statistics lecture will be held on Monday.
Days

Subject

Monday

Statistics

Tuesday

History

Wednesday

English

Thursday

Economics

Friday

Mathematics

Hence, 'Economics' is the correct answer.