Identify the possible research approach which can be used in the following studies

a$)$ Mandatory adoption of IFRS and cost of capital: does country classification matter? Evidence from developed versus developing countries

b$)$ Understanding subcontracting organizational arrangements for construction projects in China: integrating capabilities and uncertainty.

$3$

c$)$ Who classifies interest payments as financing activities? An analysis of classification shifting in the statement of cash flows at the adoption of IFRS

d$)$ How do corporate political connections influence financial reporting? A synthesis of the literature.

e$)$ Does stock market rescue affect investment efficiency in the real sector?

f$)$ Measuring compliance in public procurement: the case of Tanzania

g$)$ Liquidity and capital structure.

h$)$ Assessing Egyptian construction projects performance using principal component analysis.